Serta Memory Foam 3-inch Mattress Topper

Included Warranty: 1 Year Limited -- Manufacturer
The Rewards Program that Pays for Itself
  • EARN 5 to 40%
    Earn 5% in Club O Rewards on every order & up to 40% on select items.
  • FREE SHIPPING Every Order, Every Day*
    No matter how big or small, your order always ships for free.
    Dedicated customer service and early access to exclusive deals.
    Club O pays for itself, or we make up the difference
Starting at: $144.99
Free Shipping*
  • Delivery Estimate

    Select a Product Option to view shipping

    • Product Alerts

      Stay in the know! Choose which alerts you’d like to receive on this product.

    Serta Memory Foam 3-inch Mattress Topper
    • Wishlists
    • Save for Later
    Made in USA

    Make your mattress comfortable overnight with this premium memory foam that gently adapts to your body and evenly distributes your weight for maximum comfort and support. Proudly made in the USA by Serta, for quality you can trust.


    ITEM#: 1138213

    This Serta mattress topper is designed with premium memory foam proven to evenly distribute your body weight and relieve painful pressure points that cause tossing and turning. You'll experience cradling comfort and gentle support to help you sleep more deeply and wake up feeling refreshed. Serta is proudly made in the USA, where our quality and your sleep are our highest priorities.

    • 3-inch premium memory foam
    • Optimal balance of comfort and support
    • Relieves pressure points for less tossing and turning
    • Adapts to your body for pain-free, deep sleep
    • Improves circulation
    • Durable, holds its shape
    • Extends the life of your mattress


      • Full: 51 inches wide x 72 inches long
      • Queen: 58 inches wide x 77 inches long
      • King: 72 inches wide x 76 inches long
      • California King: 70 inches wide x 80 inches long

      Memory Foam Tips:
    • Remove from packaging within 72 hours of receipt to maximize memory foam expansion
    • This product arrives tightly packed in a box sized to be portable; once you unwrap it, you can sleep on it the same night, although it may take 48 hours to return fully to its original shape.
    • Memory foam is inherently comfortable and supportive, no matter how firm it feels; similar items can vary in firmness due to the nature of the foam
    • Product is vacuum sealed at the factory for efficient shipping; vacuum sealing sometimes traps odors, but once opened, a few hours of airing will usually remove the odor
    • Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product.

    Due to the nature of Memory Foam the firmness level of every item is unique. Please be advised that even similar products may produce different firmness results.


    Type Mattress Topper
    Thickness 3 Inch
    Memory Foam Type Memory Foam
    Comfort Level Medium
    Density 4 Pound
    Product Features Antimicrobial Hypoallergenic Made in USA
    Tags Classic Comfy Cozy Durable Fluffy Luxury Plush Quality Smooth Soft Summer Warm Winter
    Dimensions See Above
    Manufacturer Warranty 1 Year Limited -- Manufacturer
    Materials Foam
    Model Number MP12918

    Customer Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • Great Topper

      I thought it was a little too firm at first. But then it softened up just right in about a week.

      Read More
    • Great buy

      We bought this topper for my son about a month ago and he loves it!! I was a bit sceptic all at first, especially when I pulled it out of the box but after a few nights of sleeping on it, he can't go back to a bed without it. I am thinking about buying another one for my other son! I would definitely recommend this product.

      Read More
    • Topper

      I put this on my expensive DWR mattress. Much more comfortable.

      Read More
    • Love IT!

      Have had one on my bed for 8 years and it is still wonderful. I purchased three more, one for my Mom, Sister, and Brother. We also have a Tempurpedic mattress (guest room) but like the 3 inch mattress topper on our bed better.

      Read More
    • will she sleep in her own bed?!

      My little girl won't stay in her own bed. When I lay with her I notice the bed IS harder than mine and I get aches and pains from laying there. So, I try this foam mattress topper. Read lots of reviews and found it on Overstock for a great price. It took a day or so to unwind and I didn't notice a bad smell. It was delivered on a very very cold day so it also had to thaw! I love it! My aches and pains disappeared. Unfortunately, my little girl still finds her way to my bed rather than stay in her now comfy bed. ;)

      Read More

      IF THIS POST IS TOO LONG, SIMPLY READ THIS FIRST PORTION:IMPORTANT INFORMATION:A mattress of 3? thickness with 3lb density is wonderful for light-average individuals and will provide the comfort/support needed (approx 100-150lbs).A mattress of 3? thickness with 4lb density is ideal for light ? above average individuals, 100-200lbs.A mattress of 4? thickness with 3lb density is ONLY suitable for light individuals, or those who require a very soft mattress. If you are over 150lbs you will begin to lose needed support. If you are over 200lbs this will not provide you with the support you require and may not be appropriate for you.A mattress of 4? thickness with 4lb density is suitable for average ? husky individuals, 150-250 lbs. The extra inch (over 3?) will give you the extra needed cushion so that you don?t sink straight through the mattress and the 4lb density will provide you with the much needed support. </BR> ------------------------------------------------------ I spent a great deal of time doing research on memory foam toppers before deciding to make a purchase. I'm a very meticulous person and I like to evaluate all of my options before selecting an item, specially one over a certain price, and if I would consider it a luxury item.First off, I want to say that I have nothing but praise for this memory foam, and I will attempt to aid any person reading this in deciding whether or not this is the correct item for them.When looking at memory toppers, if you are looking for both comfort AND support, then you should automatically eliminate anything with a depth of 2.5" or lower and 5.5" and higher. (Do not choose 2.5 < or > 5.5).A thin mattress topper of below 2.5" may provide you with a comfortable feeling, but it will not provide you with the actual support you need, if you are only looking for comfort, and not physical benefit/support, then below 2.5" is for you. One caveat to this is if this mattress topper is intended for a child or very light individual, they will depress the visco-elastic material less then a (older) teenager or full grown adult, in that circumstance a mattress topper of 2.5" will be supportive/beneficial.A thick mattress topper at/over 5.5" will be quite deep and you will find that you sink into the mattress (unless you are a child or an extremely light person, below or at 100 pounds, at which point your body will not sink, but you still will not receive the appropriate support for your body). For an average weight adult, you will not find the comfort you want as your movements will be restricted and support will now become uneven as the heavier parts of your body will sink too low and you will be unable to achieve the spinal/body support that is required for a healthy nights rest.------------------------------------------------------The optimal range for thickness of a memory foam mattress is 3? - 4". This range will accommodate the standard adult build (greater then 100lbs and less then 250lbs or approximately 45kg ? 115kg, these figures are products of my own analysis and consumer reports).-If you are a light-average build, 100 ? 200 pounds, you will likely find the comfort/support you require from a 3? thick topper.-If you are average-husky, 150-250 pounds, then you should review a 4? topper to accommodate for ?sinking? into the topper.There is an overlap of 50 pounds in the weight range(s), this is on purpose as you must consider that this topper may not be used by only you, but a significant other as well.*I personally weigh 175lbs, whereas my fiancée rings in between 100-108lbs (please don?t tell her I posted her weight, hahaha). We found that the 3? topper provided excellent support/comfort for our weight ranges and have had nothing but approving responses from friends/families over the comfort of our mattress.---------------------------------------------------------Density is the second factor you must consider.3lb and 4lb is optimal density for the average consumer, someone weighting 100 ? 250 lbs and the density you require will differ based on size, obviously, the more you weigh the greater the density you will need.Avoid exceeding 5lb density as you will begin to sacrifice comfort in the memory foam topper. 5lb density is suitable for husky ? ?large? build individuals 250+ lbs, you would also look at a thicker mattress 4-5? in that weight range.---------------------------------------------------------Brand names: They actually matter for this product! Non-brand name foam mattresses have an indeterminable length of usability for their product. After reviewing an incredible amount of products from different suppliers I have found some of these products are meant to only last 1 ? 2 years, while others can last 5, 10, or 15 years. More often then not, the name brand products last longer. is fortunate that it has a large selection of quality toppers.----------------------------------------------------------Heat Distribution: As this mattress is not a ?vented? mattress it will trap heat a little more then an ordinary mattress topper. I have been using this on warm nights and have not found any discomfort from this small amount of added heat, in fact, as the mattress is able to retain my heat, it softens up a little more the longer I am resting on it, making my rest more on more comfortable as I lay there.----------------------------------------------------------If your partner happens to be a wrestles individual or someone who practically jumps into bed at night, then this mattress topper will help reduce the vibrations you feel and will allow you to sleep better without being disturbed. I speak as a perpetrator of literally ?jumping? into bed every night.-----------------------------------------------------------Washing/Cleaning:Good luck. Don?t get it dirty in the first place! Use a damp rag to wipe off any spills that may get into it. Never lay it directly on your floor (especially carpet), it will grab EVERY piece of dirt/filth there is and you will NEVER get it out.?oops------------------------------------------------------------------Personal Opinion:Overall I couldn?t be happier with my purchase. I haven?t slept this well in years! I have been having a very bad problem with being unable to wake up in the morning for the past few years. I have 3 alarm clocks (yes, 3 individual alarm clocks, 2 of them with 2 separate alarms, so 5 alarms), my cell phone with 3 alarms, and my computer with a morning alarm. In total, 9 alarms go off in the morning, and I have a tendancy of sleeping through ALL of them, even when they are at full blast. I had not been getting a real rest when I slept! To make matters worse, my partner moves around a lot, as such, I haven?t been getting a really good deep sleep in years, with minimal REM cycles?(dreams)?I have been exhausted constantly. All of that changed when I slept on this topper. For the first time in 4 years I am having vivid dreams that I remember when I wake up, this is an indication of a deep sleep, which your body/brain needs to recharge! Additionally, I wake up immediately at the sound of just one alarm at half volume! As I?m no longer thoroughly exhausted I can actually get up in mornings and have been making it on time to all of my appointments, and scheduled events! I can?t believe how much the memory foam changed my life!Do yourself a favor and BUY IT!------------------------------------------------------------------------*1 last note, when the package arrives, OPEN IT IMMEDIATELY and let it decompress/air out. Ours took only 1 hour to fully decompress as it was only in shipping for a few days. The majority of the smell left after a few hours and wasn?t bad to begin with. The odor completely left after 2 days, but was mild enough that we slept on it with no complaint the very first night we received it.

      Read More
    • This pad has been a lifesaver!!!

      I didn't realize that the mattress on the guest bed really wasn't that comfortable (never was - not that old) until I decided to test it. Priced new mattresses and decided that a topper was the way to go. I already knew that the foam had to be at least 3" think to mean anything and I knew about density. This wasn't a task for store to store shopping; company was on the way the next weekend. Zipped over to the website and did a bit of searching and there it was. The right thickness and good density. The shipping speed was AWESOME! These pads need time to unroll ON THEIR OWN. And a bit of time to air. You have to have a mattress cover which is deep enough to accommodate both the foam topper (this is really a bit more than a topper) and the mattress. (Ordered that from as well) I placed the pad on top of the mattress and let it do its thing. The next day it had completely unrolled and I was able to make the bed. Lay down and was amazed. It wasn't the same mattress. Be advised, without a cover which some do come with for quite a bit more $$$, it isn't a pretty sight. Since you're going to want a cover anyway, it really doesn't matter. This 3" memory foam topper/pad is fantastic. I stopped writing in order to lie down on it just for the sake of this review (Ah, the sacrifices we make) and it felt even better for my spine/neck than I remembered. And yes, my guests did appreciate the new feel - they'd slept on the bed before. I already know that I will have several good years for the guest bed now. An excellent value!

      Read More
    • Excellent Value!

      This Serta topper is a great value. I previously owned a no-name 2" topper with 2.5 pound density. This Serta from Overstock is 3" with 4 pound density, and the difference is wonderful! The 4 pounds offers firmer support, and with 3 inches it offers more of that support. I can tell the difference. I sleep better and wake up with no aches or pains. I have also priced these on the internet, and overstock has the best price on this product by far! Don't pass this up!

      Read More
    • My Achy Breaky Body

      I had been wanting to buy one of these mattresses for a long time but would only do so when I found one for approximately $100 and at least 3 inches thick. We got this, it arrived in a timely manner and weighs more than you think (lift with your knees). Once opened, it needed to be aired out as it is rather smelly but just letting it breathe for a few hours did the trick. We noticed that it arrived with a couple of nicks (sp?) in it but they were small, so we didn't bother making a big deal over it as a sheet would be on top of it anyway. Well, we loved it for the first 3 weeks before the foam started softening up where our body naturally lies each night. I love the mattress but my husband doesn't nor does he get a good night sleep like i do. The topper is now waiting to be given away. If either you or your partner like firm mattresses, don't bother wasting your money on this, however, if you are like me, and like softer mattresses, you WILL love this and the quality is pretty good

      Read More
    • Love it!!!

      I purchased this topper after having bought a brand new mattress that I hated and couldn't return! The first mattress I bought was too soft and I was allowed one exchange. I *thought* I was choosing carefully, but the mattress ended up being way too hard. I gave it some time so my body would adjust, but nothing. I was not sleeping at all, in pain, frustrated to the point of tears....and left feeling like I had just thrown $1,100 away. I bought this topper and it completely saved me!! I read the great reviews, but did not expect it to make this much of a difference. I took it out of the box and let it unfold on it's own as it says on the instructions. I let it air out like that in a sparebedroom for about 2 days. The smell went away soon enough. It fits perfectly on my queen bed and now.....I actually love my bed!!!! Also, I had mentioned the purchase to a friend of mine and he said he had also bought it sometime ago from Overstock and swears by it! Also, bought one for his parents.

      Read More

    Questions & Answers

    Get your product questions answered right here.
    • what is the best size to order for a standard queen mattress, which is 60" by 80"

    • Why did you choose this product?

      • Hoping to extend life of old mattress. Chose this one for brand-name, wanted memory-foam only, reviews were good, price was reasonable.

      • looking to improve mattress comfort

      • mattress comfort

      • I've bought Serta toppers before and love the quality.

      • My sister has similar one and I love it!

      • Looking for a 3" topper with 4lb. density at a fair price.

      • The reviews were very favorable

      • ?

      • We have owned another and were very happy with it.

      • Replacing old topper due to...dogs

      • Need the extra support for mattress.

      • Reviews from other purchasers here on, Serta satisfaction numbers found elsewhere, and Serta reputation. Look for reviews that explain thickness and density recommendations for your size and sleeping habits.

      • Because I am trusting that this is actually a Serta memory foam mattress. Non name brands of memory foam seam to be hit or miss as to whether they are actually real 100% memory foam.

      • comfort

      • For the camper.

      • I've owned several toppers in the past 15 years and based my selection on the reviews provided.

      Read more Read less
    • Why are the sizes so short. I can purchase the same topper on but the sizes are actual mattress sizes. I ordered a Queen from Amazon and it was 60x80x3 instead. The Queen I ordered from Overstock was only 58x77x3. The topper from Overstock only weighed 26 pounds making the topper only 3.37 pound density while the one from weighed 33.3 pounds. Why are the toppers shorter and have less density than advertised on Overstock than on Amazon for the exact same product a Queen Size Serta Memory Foam 3-inch Mattress Topper?

      • Hello obuyer101, I hope your day is going well. The density of the mattress is 4 pounds and the queen-size is 75 x 67 inches. Thank you for shopping with us.

    • I want to replace the Memory Foam Topper I bought in 2005 with the identical product, only in King size. I see that it is out of stock or discontinued. Which would you suggest as the very closest alternative? It was the: ITEM#: 958799 Model Number O-3S400 Materials - Visco elastic foam Would it be this Serta one, or another? We want firm, 4 lb, NOT GEL (we have a gel now and we are sinking into it!) Thanks for your help

      • Hello zansgram, I think this one would work great. this is also 4lb density. Have a great day!

    • what is your return policy?

      • Hello agdmichelle, due to the nature of this product, it cannot be returned once it has been opened. Thanks for shopping with us!

    • I have a full size bed, but have heard that you need to order a size up and then trim it down in order for it to fit properly. Is this true?

      • Hello alexclarice, the dimensions of the full side is approximately 50 inches wide x 72 inches long, if this is not the right dimensions for the top of your mattress i would go larger. I hope this helps, have a good day!

      • I've had memory foam toppers for 2 different queen beds and a king size bed and always found they fit true to size. I've never heard to order up and trim it down I would concerned it would damage the integrity of the foam. This particular Serta memore foam fits perfectly on my King mattress.

      • not for me it wasn't

      • I had no problem with my topper, size or comfort wise. I love it!

      Read more Read less
    • is this visco memory foam and if not what is the difference

      • Hello moet, this is visco foam also known as visoelastic polyurethane foam. The difference between the two is memory foam usually has a higher-density memory foam which softens in reaction to body heat, allowing it to mold to a warm body in a few minutes and visco is a low-resilience foam. I hope this information helps you, have a good day!

      • This to me sees higher quality than visco memory foam.

      Read more Read less
    • is this disco memory foam

      • Hello moet, this is not disco memory foam. Thanks for shopping with us!

      • If you mean visco then no it is not.

      Read more Read less
    • How large is the box it's shipped in? It's a gift, and I'm trying to decide whether to ship it to myself so I can wrap it and take it over or if I should just ship directly to the person. Thank you!

      • It comes rolled up - but it's heavy! Ship it directly to the person who will be getting it!

      • Hello lindasouza, I hope your day is going well. The box is approximately 15.5 x 16.5 x 18.3. Thank you for shopping with us and have a great week.

      • It's heavy. I wouldn't worry about wrapping it, ship it directly to them

      • I'd ship directly its a heavy box and depending on size of your vehicle might be hard to transport to the giftee.

      Read more Read less
    • Has anyone found a cover for the memory foam? I had a hard time finding one. I purchased the one from overstock (Item #: 1016039) but after receiving it, it is not really what I wanted. It is padded so your body heat never reaches the memory foam and so it never really molds to your body, which is the appeal of the foam. I really just want a cover to protect the foam.

      • Hello ValP, you can do a search for "memory foam topper cover" along with the size you need and that should help you. Thanks for shopping with us! A.S.

      • Something that has worked great for me is an inexpensive, plain fitted sheet, preferably with elastic all the way around. Just put it on the memory foam topper only, tuck it in all around, then put your regular fitted sheet over both that and your mattress to cover everything. This solution also makes it easy to remove the topper "cover" if you want to wash it along with your regular sheets.

      • I use a thin mattress cover for the topper and the mattress and that works fine for us.

      • I got a Charter Club temperature mattress cover and it fits mattresses up 16''. So I just use it to cover the mattress topper and the memory foam mattress at the same time.

      Read more Read less
    • What is the density of the foam in this product?

      • Thank you for contacting us, haroldsson. This has a 4lb density with an ILD rating of 10-14. Please let us know if you have any further questions.

      • From other foam toppers I've had this is a medium density in my opinion. Not so thick that you cant fit sheets over it easily but think enough for the added support.

      Read more Read less
    • Where is this memory topper made? USA, Canada or Europe?

      • Hello Gram, this memory topper was made in the USA. Thank you for shopping with us! Terri D.

    • I have a very similar question to delfuego. Is this memory topper made with the same type of memory foam as the Serta 4" memory foam topper (that is, the Visco Elastic Memory Foam)? Thank you!

      • Sorry I don't know the answer. I would think the difference of an inch would have a big impact on comfort and support. I would go for the thicker 4 inch foam rather than 3 inch foam.

      • 3 inch is plenty for me. It has great density and works well. I'm pretty light though. Also, even 3 inch king size is heavy and not easy to move.

      Read more Read less
    • Is this topper made with Visco Elastic Memory Foam?

      • Hello delfuego, his product is not made from the visco elastic memory foam. If you are specifically looking for this material, Item #: 10031883 contains what you are looking for. I hope this helps. Thank you for shopping with us!

    • Why don"t they make a queen size. Have a 2lb now would buy this if came in queen.

      • Hello scottsummer, under options you will find the queen size listed. Thank you for your interest. Shelia B

      • The Queen size 3" I bought is excellent.

      Read more Read less
    • I bought one of these for my bed several years ago. My daughter is wanting one for Queen size bed. Will you be caring any of these in stock soon?

      • I just bought queen size and fits perfect. remember to let it sit flat for a day for full size

      • Hello vickiblue, items are restocked as they become available; however we cannot guarantee an item will be restocked. Thank you for shopping with us.

      Read more Read less
    • Why is the King sizing for this topper so different from the other Serta toppers? My king mattress is 76" W x 79" L, and I this King topper is 72" W x 76" L. I would really like to buy this particular topper but don't think the sizing will work. Thoughts?

      • I have the same problem as you. I ordered this topper thinking it would fit my standard king mattress, but it doesn't (too small), so I have to return it. I'm really disappointed and I think that the manufacturer should mention that this topper is NOT in compliance with the US standard bed dimensions.

    • Does anyone know of a cover to put around just this? (not the entire mattress) I've had it for a couple years and it's yellow now and pretty bad looking, my dog also likes to chew on it.

      • they turn yellow with age but I find that just putting it outside on a nice sunny day will air it out. Once the sheets are put on -- do you really care what color it is???

      • Yes, I bought the Down Alternative Gusseted Design Top Cover for Memory Foam Topper, and it fits perfectly.

      Read more Read less
    • Mine came with a "sleeve" made of a white flimsy material. Is this a cover that we leave on, or just a cover to keep it clean when shipping/storing?

      • Hello 4shorecats, the sleeve that the mattress topper arrived in does not need to be left on. It is for shipping. Thank you for shopping with us!

    • My major concern deals with the stories about heat which is not transferred away from the sleeper. I live in FL where my A/C runs every night of the year except for 3 or 4...honestly. My familial roots are Scandinavian so admittedly, I do not belong in FL's oven, but here I am! I MUST be very cool to get any rest at all when in bed...cannot express strongly enough how important this is. BUT I have a very painful spinal injury to deal with as well--my reason for investigating memory foam. Can anyone offer practical opinions about this difficult set of circumstances? I would appreciate any input enormously!

      • Hello flaflutelady! Most customers report they do not have a bad experience with the topper creating more heat. They have actually stated that it doesn't hold body heat well. Hope this helps and thanks for shopping with us! -Amanda P

      • You may want to research a topper which contains the newer cool gel technology. I live in the SW where summers are HOT and memory foam does retain body heat. While it is awesome for my arthritis it is warm on hot summer nights. While it does not bother me, it did bother my son when he came to visit from up north. He was dealing with a back injury so I gave up my bed during his stay which after 2 nights he opted for the guest room. With refrigerated air it may be less uncomfortable as we use evaporative coolers.

      • We didn't experience the "heat" problem and have these mattress toppers on all our beds -- including the one in the camper. I would give it a try -- we love ours.

      • I live in hot Texas, and this is fine with me. Of course, we have AC and also sleep with fans on, but I haven't had any problems with heat from it.

      Read more Read less

    Shopping Guides

    Shipping & Returns


    Usually leaves our warehouse in 1-2 business days. *

    Standard Return Policy:

    Items must be returned in new or unused condition and contain all original materials included with the shipment. More Details

    FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

    Shipping Information:

    Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
    Standard shipping details
    Expedited shipping details

    * For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

    ** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.