The general rule is to give your new memory foam mattress 48 hours to expand.
The real answer is that it’s not that simple. In fact, each memory foam mattress has their own recommendations that you should follow.
I’ve created a chart to help you see what is best for your mattress. Then I go over where the 48 hours came from and if you can sleep on your new memory foam mattress right away.
|amerisleep||Can 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.|
|BEDBOSS||Should 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.|
|Casper||Can expand and be ready to sleep on in a few minutes but keep in mind that some will take longer.|
|Classic Brands||Allow 24 to 72 hours for the mattress to regain its full shape. If the mattress gets to its full height its ready to use.|
|Dreamfoam Bedding||6 to 7 hours from opening.|
|Helix||Give it 2 hours to regain its shape and you’re done.|
|Layla||Will 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.|
|Leesa||May take up to an hour to expand but give it 24 hours to fully expand and be at its best|
|Linenspa||Up 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.|
|LUCID||Up to 48 hours, but if it’s fully expanded after 24 hours you can go ahead and sleep on it.|
|Lull||Will do most of the expanding in 2 to 5 hours and fully expand in 24 to 48 hours.|
|MLILY||Should be ready in 24 hours. Walking on it while it’s on the floor can help speed up the process.|
|Nectar||Between 24 to 72 hours to expand.|
|Nest Bedding||You 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 Sleep||let it expand up to 72 hours|
|Puffy||Allow it to expand and breathe for a few hours before putting bedding on it.|
|Purest Of America||Allow 24 to 72 hours to fully recover.|
|Signature Sleep||Wait at least 48 hours.|
|Tuft & Needle||Only takes several hours to reach the proper specifications, but in some cases, it may take up to 5 days.|
|Tulo||Allow it to sit for an hour before using it.|
|Zinus||48 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 hours to expand, but let me explain why.
Can You Sleep on a New Mattress Straight Away?
The reason why you wait 24 hours or 48 hours or even 72 hours is an old saying that people keep repeating and don’t know why.
As you can see from the chart above that many of the memory foam mattresses not only say shorter time frames but even recommend sleeping on the mattress in the first night. The constant movement and your body heat from you using the mattress help to loosen up the foam and make it expand faster.
Where it really mattered was on the first generation of memory foam mattresses as they would need to be aired out. It was not the expansion that was the issue but that it stunk. The mattresses you get these days don’t smell as bad as the older models, but I would still recommend letting them air out for a few hours so it absorbs the smell of its surroundings. I know it sounds odd, but its well worth doing.
What if my mattress says to wait a few hours? – This is going to be one of those play it safe kind of things. The people that best understand your mattress is the ones who made it after all. I’ve included links to the FAQ pages for many of the mattresses manufacturers so you can better understand what they have to say.
My Memory Foam Mattress Is Not Inflating!
No need to worry if your memory foam mattress is not expanding as its an easy fix.
The best thing to do is get the mattress on the floor as flat as possible. Then wearing clean socks walk on the top of the mattress. The constant moving around combined with your body heat will help to expand the mattress. I like to think of it as massaging the mattress.
After that, put it back on the bed frame and sleep on it for a few nights.
Keep in mind that just like new shoes a new mattress needs to be broken in. This new mattress is going to feel very different than your old one who had years to conform to your body. We tend to forget this because we only buy mattresses every decade or so.
Its Been A Week!
If it’s been a week and the mattress has not expanded to the correct height then, unfortunately, you have a defective mattress.
The good news is that this is usually a rare thing, but 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 the returns and what they usually do with the old mattress I have a post on that here.
If you have to return the mattress and want a new one I’ve had good luck with Zinus Green Tea Mattress.
Want Your New Mattress to Last?
I mean, you spent all this money you probably want it to last as long as possible right?
I highly recommend you get a mattress protector here for your new mattress.
Your mattress is a giant sponge, and it will soak up all the sweat, soda, dead skin and all the other nasty stuff you do in bed. Those liquids sit there not only making the mattress nastier but destroying the function of the structure. It’s hard to work correctly when “waterlogged” with juices.
Plus, these modern-day mattress protectors feel and look like a regular bed sheet. I even have a review on the very one I use on my mattress here. They’re not even that expensive either; I consider it crazy when people don’t use something so practical and affordable.