How Long To Let Foam Mattress Expand

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How to Plump Up Memory Foam

Leave off bedding until a memory foam mattress or topper expands.

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Memory foam mattresses and pillows typically come compressed or vacuum packed in as small a package as possible, but this leaves them temporarily squashed. Plumping your new foam may only require a little time, but manufacturers suggest another reason to wait a short while before using your new memory foam product.

Waiting It Out

Your memory foam may take up to a day to fill out or plump up after you take it out of the packaging and it begins to expand to its original size. Some manufacturers suggest that you let your new memory-foam pillow or mattress air out for a day or up to a week until it loses any new-foam smell. By the time the smell dissipates, your foam product should be fully plumped. After you start using the mattress or pillow it should retain its plumpness, but rotating it once or twice each month can help. A 3-inch-thick memory-foam mattress topper should be sufficient for the average-sized person, but plumper 4- or 5-inch-thick toppers offer more support, if needed.

How long to let foam mattress expand

What Happens If You Sleep on a Memory Foam Mattress Before 24 Hours

So you’ve got a new memory foam mattress, you’re excited – in the back of your mind you remember some rule of thumb about waiting for a day before sleeping on it. The manufacturers say to wait for at least 48 hours before it expands fully, especially the ones that are still in the box. But if you’re curious what happens if you sleep on a memory foam mattress before 24 hours, then you’re in the right place.

Sleeping on a Memory Foam Mattress Too Soon

There are some essential things to consider before sleeping on a memory foam mattress too soon. For instance, most memory foam mattresses require up to two days before it goes back to its original size and form. After all, these mattresses are vacuum sealed, pressed and rolled tightly to fit in the packaging.

But can you sleep on a memory foam mattress the first night? Well, you can relax, jump, or do whatever you want with your bed as soon as you received it. Using it right away won’t cause any damage but will only speed up the process of expanding the foam.

This 24-hour recommendation is to ensure customer satisfaction and manufacturer guarantees.It also gives any off-gassing time to dissipate.

Why It Needs 24 Hours to Expand?

Well firstly, you you should know that the off-gassing happens in the first couple of hours. If it’s okay to sleep on your new memory foam without waiting for 24 hours to allow it to expand, then why do we still need 24-48 hours?

It’s all about the manufacturer guarantee. They claim that if it doesn’t fully open up and you did sleep on it then you’ll void that guarantee. If you’ve paid several hundred or even thousand on a new bed – you have to think twice about risking your money back opportunity.

But another important question is that, what should you do if your mattress takes more than 24 hours to expand fully? Well, there are rare cases wherein compressed memory foam mattresses don’t fully extend. If that’s the case, then you can ask your seller what to do to make it expand or ask for a new one.

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Zinus Mattress – How Long to Expand

Most Zinus Memory Foam Mattress like the 12 Inch Green Tea Mattress need 48 to 72 hours to relax and decompress and restore to its original shape. That’s why the Zinus company manual advice customers to open the packaging within 72 hours of arrival to make sure the mattress they ordered will fully grow to its potential.

And with the green tea extract infuse in the foam, you will not inhale hazardous and harmful smell with you first open the packaging. It will typically dissipate after laying the mattress in a well-ventilated area.

What to Do When Memory Foam Mattress Not Inflating?

Memory foams have different thickness levels. You can choose from an 8-inch mattress to a 13-inch memory foam bed. They are designed with open cells to conform to various shapes of sleepers using the bedding. Before they leave the factory, these mattresses are folded and compressed using a machine roller to fit into a small package.

The best way to use a memory foam is to let it expand before using. However, if it’s not inflating, there are simple tricks you can do to enjoy its comfort after 24 hours of arrival. Check these tips to help you out:

  • Unbox the memory foam within the three days of arrival. Remove the plastic cover using your hands. Never use any sharp objects like a knife and scissors when removing the mattress from the package to avoid damages.
  • Allow the foam to adjust in room temperature, which may take up to a couple of hours until it begins expanding. This step is essential, especially when you get your memory foam in the winter season. Foam mattresses tend to become more brittle if it’s still tight, which can lead to tearing.
  • Unroll it in a spare room so the open cells of the memory foam will expand and inflate freely. Separate each layer of the foam carefully to allow them to grow. Pull them in uniform motion with slow and steady hands.

What Are the Possible Reasons Why your Lucid Memory Foam Mattress is Not Expanding?

If your Lucid memory foam mattress is not expanding, there might be an essential step you haven’t performed after unrolling it. First, it needs time to develop, typically within 72 hours before you can finally use the mattress. So wait for it until it becomes entirely usable in its original size.

Some memory foam mattresses take one week to air out, but they lose the new-foam smell at the same time. It is already fully plumped when you noticed that the smell is gone. And you can use a mattress topper to retain the plumpness of your new memory foam.

Key Takeaways

The truth is, each mattress has its own expansion time and features. Therefore, the time required before they fully expand will depend on the model and brand you purchased.

Before you can move it to your bedroom, most memory foam mattresses that usually take 24 hours to decompress may still need at least two hours. Waiting for 24 hours or 72 hours to allow a bed to expand is a traditional belief.

Most of the mattresses offered on the market today only take a short time to decompress, and you can sleep on the right after unboxing them. So there’s nothing to worry about sleeping on your mattress too soon. You won’t damage your memory foam while sleeping on it during the first night.

The key is in the type of memory foam used in your mattress. The higher quality the foam, the better and faster it will expand in less than 24 hours.

Unwrapping your new mattress

There has recently been a massive influx of boxed mattresses to the market. The reason why has been to reduce the delivery costs, logistics and manufacturing to maximise profits. We are yet to be convinced of the benefits to you the customer with these models. Most of which are cheaper layers of foam and have been created by venture capitalists rather than mattress experts.

Can a quality mattress really be easily rolled?

The reason we have created this detailed guide is due to the number of enquiries we have about opening mattresses such as Eve, Simba, Casper, Herdy and Emma mattresses. We know opening these boxed mattresses can be tricky and if you damage the beds you will void your guarantee. We also provide advice on what to do if you need to send your boxed mattress back under their 30-100 day returns process if you’re not getting on with your new boxed mattress.

We would advise caution with buying a boxed mattress, as rolling and storing them for long periods of time can damage their flimsy foam layers. However, if you’ve recently bought a boxed mattress this guide will give you all the details you need to know.

What is a boxed mattress?

A boxed mattress is usually a foam mattress that has been vacuum packed and rolled to save on storage and delivery space. They have been marketed as NextGen and given different fancy covers. However, in reality, all of these mattresses are variations of the basic memory foam layered mattress. There are a few exceptions such as Herdy but in effect, they are layers of foam, glued together then crushed & rolled to fit into a box. At John Ryan, we don’t sell any rolled mattresses. Our mattresses wouldn’t fit and we wouldn’t subject them to the damages of being rolled and crushed. We did some tests when rolled mattresses entered the market, more on that later.

Boxed mattress brands you may see online:

  • Eve mattresses
  • Casper Beds
  • Leesa mattress
  • The One by Made (Memory Foam Bed)
  • Herdy – Wool and synthetic pocket springs

The mattress enters a big roller which crushes the air out of the foam reducing its size drastically, putting it under stress it is then sealed in a bag, usually heat sealed, and then boxed. It means that a normally large sized mattress can be reduced to fit more on a lorry and make delivery easier for the customer.

However, these mattresses are under great stress when in this position. They want to return to their regular shape and are constrained. Foam can tear, springs can deform and fabric can become stretched and rippled when you unroll them.

We recommend avoiding boxed mattresses if possible, your money is better spent on a Quality upholstered pocket sprung mattress instead like our Handmade Mattresses.

Does rolling a mattress damage it?

A very long time ago now, we trialled rolling a sample Hybrid foam mattress, mainly to see what happened. We were given assurances by suppliers of the machinery that can crush and roll mattresses, that it was fine to do so. There is a time limit of around 6 weeks and after that, the mattress is usually showing some form of stress or damage. However, after 6 weeks we unrolled our two samples. One was Hybrid foam layered up, the other was a FEPS spring unit with a hybrid foam layer.

The Results of Boxed Mattresses:

  • The Layered foam mattress came out with micro tears all across the foam layers when removed the cover off it (Most Eve, Simba, Casper or Leesa mattresses have non-removable covers so you can’t see inside or inspect them)
  • The FEPS spring unit had become stuck to some of the foam and then was slightly distorted once it worked its way loose

The best way to think of it is that the mattress has been suppressed in its packaging, desperately trying to get back to its original shape. Over time cracks and defects can occur in the foam as its stressed beyond its normal tolerances.

Foam can show micro tears and stress cracks once unrolled

Having a rolled mattress means you have to wait hours for it to come back to its original shape which can be frustrating for you the customer.

Are boxed mattresses like Eve and Simba any good?

We have extensively written about some of the newer boxed mattress brands such as Eve, Simba, Casper etc. The issue with these models is they try to be a one size fits everyone, which we disagree with completely.

They also don’t always give you the full breakdown of what exactly is in the mattresses. We have talked at length about the differences between 100% natural latex and synthetic, and why you need to know the blend and density of hybrid foams to truly know what you are getting. Then there is the issue with the One-sided mattresses. So there is plenty to consider and we would rather you read the articles to make your own mind up on these models.

There was a really interesting article in the Telegraph on Eve mattresses posting a record loss in 2018 whilst simultaneously spending an eye-watering £17.2m o advertising. What’s baffling is they only have one product, a basic foam layered mattress. These manufacture methods have been around for 20 years. So why are they spending so much on marketing and not developing the product? Eve doesn’t give the exacting details for us to be able to compare their mattresses. It does beg the question is this more marketing over quality?

If you want to read some more detailed discussions on boxed mattresses, such as Eve, then please start with this comment here.

What is the best alternative to an Eve, Simba or Casper Boxed Mattress?

We would always recommend a two-sided pocket sprung well-upholstered mattress over a one-sided foam bed. If the price is your deciding factor, then we would ask you to look at our Origins 1500 which is at a similar price point to Eve, Simba and Casper as a basis for comparison to a non-rolled mattress. However, the upholstery and spring unit far exceeds the quantities and GSM of the boxed mattresses available. This mattress cannot be boxed, there are simply too many fibres inside it to be easily crushed.

Origins 1500 Mattress By John Ryan By Design

We understand it can be convenient to have your mattress arrive in a box, even though you need to wait around 6 hours for it to fully ‘inflate’ again and return to its original shape. We would also suggest that having two men deliver it to a room of choice with it fully assembled is a far more convenient option!

If you have bought a Simba, Eve, Emma or Casper mattress the rest of this guide will show you how to unwrap it correctly.

How to unwrap your new mattress

So your new boxed mattress has arrived but before you start, we’ve provided this handy guide to show you the easiest and most effective way to unwrap your bed. It may sound simple, but it will save you any damage or scratching your heads! We’ve provided a step by step instruction guide to show you how a Casper, Eve or Simba mattress may arrive.

1. When your new boxed mattress arrives it will be sent out rolled and in a tall box.

We advise that you remove the old mattress and make sure you have some room ready to unwrap the new one. We recommend that you move the boxed mattress to the room of choice before unwrapping it. This is because once unwrapped the mattress will quadruple in size and start to expand. This means handling it becomes somewhat harder and it can be a right fuss if you’re not careful. Once in the room please take the mattress out of the box. It could look similar to the image above.

3. Once out please use a pair of scissors and not a knife. Whilst knives can be used, we warn against it as it’s far easier to slice and damage your mattress with a knife than it is with scissors. Also, we find scissors easier to put down and less dangerous if you stand on them! Turn the mattress until you can see the start of the roll, a bit like looking at the end of the sticky tape. Once you have found it using scissors carefully cut the first piece of tape and wrapping.

4. The mattress will then start to unwrap as seen below. Be careful as sometimes it can start to expand rapidly!

5. Then moving down to the middle tape if present, please carefully cut this.

6. Then moving down to the last piece of tape at the bottom, please again cut through this. This is where the mattress shall be free to unroll and expand, so again just make sure you have some clear space.

7. It will start to unroll fully. You can lay it out on the bed and remove any plastic outer packaging.

8. Once unrolled you will need to leave your mattress and topper for good 6 hours as they start to expand and fill with air. This is because during rolling the air is compressed out of them.

It may be a good idea to open a window and let the mattress ventilate as they offgass. Just like a new sofa or car, there will be some ‘new bed’ smell that comes off the mattress. If your mattress after 6 hours is still not looking fully expanded a quick shake and then another few hours or so should be enough.

Why does my new mattress smell?

Boxed foam mattresses, such as the brands above, are also well known for having a very distinct synthetic plastic or chemical smell when you unwrap them. This is not surprising given they have been off-gassing in their bags for who knows how long. We have a really detailed article on off-gassing which may be of interest. However, with a non-rolled Natural fibre mattress, you don’t get this onslaught of chemical smells when you’re mattress arrives.

How long does it take to get used to a new mattress?

Once you have let your mattress settle for a few hours, we then advise you give it a week or two to sleep on it to properly try it. Lying on it for a night will not give you a true feel for the mattress. If you think of a new mattress like a new pair of shoes you need to let it bed in slightly and allow our self 1-2 weeks to truly get used to it before deciding if it is right for you or not. Especially if you have had your previous bed for a number of years you will have been used to its feel and profile, a new bed will feel different at first.

All of our mattresses are handmade and arrive fully assembled

Our 60 day love it or return it guarantee gives you this peace of mind. If there are any questions once your new John Ryan mattress arrives please don’t hesitate to call us, 0161 437 4419 or email for guidance.

Returning a Boxed Eve, Casper or Simba mattress if you don’t get on with it

Any new mattress will take 2-4 weeks to get used to it. Which is why the decent mattress brands and retailers will give you a no quibble returns policy like our 60 Day love it or return it. Quite often people find foam mattresses incredibly hot during the night or that they get stuck in one position which can aggravate bad backs or aches during the night. Our advice would be to give any new mattress a minimum of 4 weeks and then if not suitable get back in touch with the retailer. The boxed mattress companies are usually really good at collecting your bed. Make sure you’ve saved the box and packaging as some companies will require you to also send this back.

If you really don’t get on with a boxed foam mattress don’t be tempted to just ‘try another one’. Given they all follow the rough construction principle of being one-sided it is highly unlikely based on our experience that you will get on with any foam mattress. It can be really inconvenient having to replace your bed every few weeks so if you don’t get on we would advise you look at a Pocket Sprung 2 -sided mattress instead. Especially one that’s breathable and responsive if you need to turn over during the night. You’ve got a higher chance of sleep success rather than just picking another ‘next day delivery’ mattress.

You’d be surprised at just what you can get for your money when compared to the synthetic boxed foam companies so its best to shop around. Our Origins Pocket 1500 is a great contender to use as a comparison model to the boxed mattress companies based on price. Why settle for a one-sided foam mattress when you can get something much more bespoke and hand made for your money?

Our Origins 1500 shows just how much you can expect for a similar budget compared to the boxed foam beds. Click to view.

Please be aware that after unwrapping any rolled mattress will take anywhere between 4-8 hours to expand to 90% of its full size. It can take further 4-6 hours to reach its maximum. We advise that you don’t sleep or sit on it during this time to ensure it has time to fully expand to its correct size. Always take care when using scissors as not to cut your mattress.

If you’re still scratching your head as to whether to buy into the boxed mattress phenomenon then why not have a look at our Handmade British Mattresses here. All of our mattresses are delivered full size and there are no flimsy glued foam layers to be found!

If you need any specific advice please get in touch.

What Happens if You Sleep on a Memory Foam Mattress Before 24 Hours?

Last updated on March 2nd, 2020 | By Amy Murphy | 4 Comments

You arrive home to find your new memory foam mattress at your doorstep. Your excitement is high as you begin to unbox the newest addition to your home. As you read the directions, your excitement hits rock bottom when you realize you are not supposed to sleep on it for 24 hours.

Everything is ready for this mattress to takes its place in your sleep sanctuary. Slats are placed perfectly for a firm foundation. The old mattress and box spring have been removed and discarded. Mattress topper and protector are ready. You just can not wait to crawl into this great mattress and enjoy a restful night’s sleep.

You’re thinking, it’s only a couple of hours before bedtime.

So, is it true that you should wait 24 hours? What would happen if you did sleep on it before 24 hours has elapsed? Will it be ruined after the first night? This is exactly what we will be discussing. Keep reading to learn why 24 hours is the target number and what happens when you sleep on your new memory foam mattress before 24 hours have elapsed.

What is Bed in a Box?

Memory foam mattress manufacturers found success in the online market. The internet allows consumers to research, shop, and buy almost anything. Your purchases are paid for and then shipped, in a box, right to your door. Some companies are so large and efficient they can do all this in 24-48 hours.

You may wonder how a mattress is going to fit in a box. Well, the box is now the primary mode of shipping for memory foam mattresses. This means manufacturers can compress, deflate, fold, and stuff a mattress in a box. Unlike traditional innerspring mattresses, memory foam is known for easy shipping and added comfort.

Getting a mattress in a box has changed the way we shop and sleep. Memory foam’s ability to be compressed, rolled, and folded is remarkable. All this action and the memory foam does not lose any of its quality. Once your bed in a box has reached your doorstep, all you need to do is pop the airtight seal, unroll the mattress and watch the expansion process begin. A good night of sound sleep is in your future.

Why is it Recommended to Wait 24 Hours Before Use?

Waiting 24-48 hours is standard for a memory foam mattress to completely take on its full shape. The reason for this instruction is to cover the manufacturer’s responsibility.

They prefer customers to wait 24 hours to allow for the expansion process to be completed. Only after the mattress has reached its full shape can a customer ensure they received the product they paid for. If there is cracking or splitting in the memory foam layer, it will not be visible until the expansion process is complete.

This 24-hour recommendation is to ensure customer satisfaction and manufacturer guarantees. It also gives any off-gassing time to dissipate. Usually, off-gassing happens in the first couple of hours.

What Will Happen if you Don’t Wait 24 Hours?

If you decide that waiting 24 hours is out of the question, have no fear. While the instructions say wait, it is generally okay if you don’t. The manufacturer always errs on the side of caution. Consumers need to follow instructions while understanding that some instructions are recommendations. If you only have a couple of hours, it is okay.

In fact, sleeping on your new memory foam bed before 24 hours can speed up the process. Body heat can make the memory foam more pliable, making it expand faster.

Only regular wear and tear from sleep can cause deficiencies in your mattress. This is not going to happen in one night. Remember that if you do choose to sleep on your mattress before it is fully expanded, you may not get the full set of benefits that particular night. A memory foam mattress can only provide a plush supportive feel at its full shape. This is why so many online companies offer lengthy sleep trials. A customer-friendly sleep trial allows you to give your new mattress an honest try before deciding if it’s for you or not.

To sum it all up, you can expect a rolled up, folded memory foam mattress upon unboxing. If your new bed beckons you before 24 hours, it’s perfectly safe to drift off upon it.

If after 24 hours your new mattress has not expanded or you notice defects in the foam, call the manufacturer.

Frequently Asked Questions

How long does a memory foam mattress take to inflate?

Generally, manufacturers say it takes 24-48 hours for a memory foam mattress to fully inflate. This time frame is not set in stone as each memory foam mattress is unique. Some new mattresses will take longer or even less time. You also do not have to wait a full 24 hours to put on your mattress protector or topper. Also, you can sleep on a mattress on the first night, just know the bed may feel different on night two or three.

Does heat help memory foam expand?

Memory foam is sensitive to varying temperatures. In cooler rooms, memory foam can seem more firm. If this is the case, you may want to raise the room temperature a few notches. Once memory foam becomes warmer, it tends to be more flexible and thus expand faster. Body heat can also aid in the expansion process.

How long should you leave a memory foam mattress before sleeping on it?

Once you have received your new memory foam mattress, it is best to open immediately. It takes 4-6 hours for the memory foam to expand 90% and could take another 4-6 hours to get close to full expansion. It is recommended to wait 24 hours before sleeping on it, but don’t worry if you can’t.

So, What Happens if You Sleep on a Memory Foam Mattress Before 24 Hours?

Memory foam is a product that has given rise to the bed in a box phenomenon. Most manufacturers boast about their bed in a box offers. It is completely possible to compress, roll, and even fold a memory foam mattress and place it in a box. No matter what size your mattress is, full size, twin XL, or king, it will fit in a box.

It is recommended to wait 24-48 hours before sleeping on a new, memory foam mattress. It is up to the consumer whether to wait or not. Defects will not be as obvious before the expansion process has been completed, but expansion should not slow down because you slept on your new memory foam mattress.

The short and simple answer is nothing. Your new mattress may not feel exceptional the first night. As the expansion process continues, it will only get better. Once 24 hours have passed, you should have a new bed with what you will call the best mattress you’ve ever owned.

Medical Disclaimer: The information contained on the site should not be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. The information provided here is for informational purposes only.

4 thoughts on “What Happens if You Sleep on a Memory Foam Mattress Before 24 Hours?”

I just purchased my new 4″ memory foam topper with a copper infusion from Walmart. When we opened it, there were no instructions inside. Just wondering if this is normal with the Alllswell king size topper. I can’t wait to try it out, but I wish it had come with a cover. Maybe there is a reason for this. I will leave a review after we have slept on it.

Mattress Ruined. What Happens If You Sleep on Your Memory Foam Mattress Before 24 Hours?

Table of Contents

How Long to Let Your Memory Foam Mattress Expand?

The general rule is to give your new memory foam mattress 48 hours to expand and inflate to its proper size.

The real answer is not that simple. Every memory foam mattress has its unique requirements.

The following chart shows what each manufacturer recommends. Below that we go over where the 48 hours comes from and if you can immediately sleep on your new mattress.

Mattress Expansion Times For Each Manufacturer

ManufacturerTime
amerisleepCan lay on it right away but could take 8 hours for the corners to expand fully and you should wait 2 hours before putting sheets on.
BEDBOSSShould decompress in 24 hours, but let it sit for 2 hours before moving it to the bedroom.
Bedinabox“It expands in about 3 minutes” is what I got when I emailed them. This seems too fast; I would still give it a few hours to be on the safe side.
CasperCan expand and be ready to sleep on in a few minutes but keep in mind that some will take longer.
Classic BrandsAllow 24 to 72 hours for the mattress to regain its full shape. If the mattress gets to its full height, it’s ready to use.
Dreamfoam Bedding6 to 7 hours from opening.
HelixGive it 2 hours to regain its shape, and you’re done.
LaylaWill take its full shape within minutes, and you can sleep on it right away. If you’re sensitive to smell give it a few hours to air out.
LeesaMay take up to an hour to expand but give it 24 hours to fully expand and be at its best
LinenspaUp to 48 hours but they do say you can jump on it as soon as you like. If anything they say your body heat can help speed up the expansion process.
LUCIDUp to 48 hours, but if it’s fully expanded after 24 hours you can go ahead and sleep on it.
LullWill do most of the expanding in 2 to 5 hours and fully expand in 24 to 48 hours.
MLILYShould be ready in 24 hours. Walking on it while it’s on the floor can help speed up the process.
NectarBetween 24 to 72 hours to expand.
Nest BeddingYou can sleep on it right when you open it, but it can take up to 24 to 48 hours for it to fully expand.
Olee Sleeplet it expand up to 72 hours
PuffyAllow it to expand and breathe for a few hours before putting bedding on it.
Purest Of AmericaAllow 24 to 72 hours to fully recover.
Signature SleepWait at least 48 hours.
Tuft & NeedleOnly takes several hours to reach the proper specifications, but in some cases, it may take up to 5 days.
TuloAllow it to sit for an hour before using it.
Zinus48 to 72 hours to fully decompress. Zinus recommends you sleep on the mattress during this time as it helps to full up the mattress. If after a week it hasn’t expanded, please contact them.

Don’t see your mattress? Go ahead and give it a couple of hours to expand, but let me explain why.

Can You Sleep on a New Memory Foam Mattress Straight Away?

The reason why you wait 24 hours, 48 hours or 72 hours is an old saying that people keep repeating.

As shown from the chart a significant number of manufacturers report shorter times and a good bit suggest sleeping on the mattress the first night. The reason is for your constant movements, and body heat loosens the foam. The more lose the foam, the better it expands.

Where The 48 Hour Memory Foam Expansion Time Came From

The first generation of memory foam mattresses is where this wait time wives tale came from. More time was needed for older memory foam mattresses to air out there odors.

The mattresses today don’t smell as bad; I would still recommend letting them air out for a few hours to absorb the smells of its surroundings. I know it sounds odd, but it’s well worth doing.

What if my mattress says to wait a few hours? – Well, it’s better to play it safe than sorry. The people that best understand your mattress are the ones who made it.

What If Your Memory Foam Mattress Is Not Inflating?

No need to worry if your memory foam mattress is not expanding; here is what you do.

Get the mattress flat as possible on the floor. Wearing clean socks walk on the mattress. The constant moving around combined with your body heat expands the mattress. I like to think of it as a mattress massage.

After massaging the mattress place it back on the bed frame and sleep for a few nights.

Keep in mind:New mattresses are like new shoes; they need to be broken in. Over the years you have gotten used to your old mattress, so the new one is going to feel different. We tend to forget this because we only buy mattresses every decade or so.

What To Do After Your Memory Foam Mattress Has Expanded?

I mean, you spent all this money you probably want it to last as long as possible?

If you want your mattress to last, you need a mattress protector.

Your mattress is a giant sponge, and it will soak up all the sweat, soda, dead skin and other nasty stuff you do in bed. Those liquids sit there not only making the mattress dirtier but destroying the function of the structure. It’s hard to work correctly when “waterlogged” with juices.

Plus, modern-day mattress protectors feel and look like regular bed sheets. I even have a review on the very one I use on my mattress. They’re not even that expensive either; I consider it crazy when people don’t use something so practical and affordable.

How Long Should You Leave a Memory Foam Mattress Before Sleeping on It?

It’s best to let your memory foam mattress expand for 48 hours. If you can’t give 48 hours then allow the mattress to expand for 6 hours before sleeping on it.

What Happens If You Sleep On Your Mattress Too Soon?

If you sleep on your mattress before it’s expanded it’s not the end of the world. In fact, many mattress manufacturers recommended you sleep on it the first night because your body heat helps to expand the foam.

I would not worry about it too much. The goal is to give the mattress a few hours before you sleep on it. It can take some mattress a whole week to reach its correct size and sleeping on it won’t hurt.

It’s Been A Week And The Mattress Has Not Expanded.

If it’s been a week and the mattress has not expanded correctly then, unfortunately, you have a defective mattress.

The good news is that this is usually rare. If it’s been a week no need to keep fighting it, contact the company you bought it from to check out the return policy. If you’re curious about returns and what they do with the old mattress check this out.

If you have to return the mattress and want a new one I’ve had good luck with Zinus Green Tea Mattress.

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