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Serta Ultimate 4-inch Visco Memory Foam Mattress Topper

by Serta
Sale Starts at: $134.99
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ITEM# 10031883
Included Warranty: 3 Year
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    ITEM#: 10031883

    Cushion up your existing bedding when you top it with this plush viscoelastic memory foam topper from Serta. Featuring 4 inches of dense foam, this topper simulates a floating effect to drift you off to sleep and is temperature sensitive for all year comfort. 

    • Resistant to dust mites
    • Naturally antimicrobial
    • Temperature sensitive 
    • Simulates a floatation effect
    • Measures 4 inches thick
    • Viscoelastic memory foam
    • 4-pound density 

    • Twin: 37 inches wide x 72 inches long
    • Full: 51 inches wide x 72 inches long
    • Queen: 58 inches wide x 77 inches long
    • King: 76 inches wide x 77 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 very tightly packed. Unwrap and allow 48 hours for this product to return to its original shape.
    • Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours.
    • Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product.

    This item does not come with a cover

    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

    Once opened this product is non-returnable.


    Type Flat Topper, Mattress Topper
    Thickness 4 Inch
    Memory Foam Type Memory Foam
    Density 4 Pound
    Firmness Medium
    Product Features Antimicrobial, Hypoallergenic
    Dimensions See above
    Warranty 3 Year
    Model Number MP13026
    Country of Origin United States

    Customer Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • Most Recent

    • Colle dorm room mattress topper
      Verified Purchase

      Got it for my college dorm room and it is so unbelievably comfy. only issue is the twin size is a little smaller than the actual bed so it slides around a lot. Highly recommend it though!

      Read More
    • Sleeping on a Cloud!
      Verified Purchase

      Thick it enough and dense enough not to bottom out. Perfect topper to your mattress to turn it into a memory foam bed! Highly recommend!

      Read More
    • Like new
      Verified Purchase

      Made my 3hr old pillow top mattress feel like a new bed. My husband can't believe how comfortable it is and how much better his back feels now. Great product!

      Read More
    • Great product
      Verified Purchase

      gave new life to my daughter's bed - a lot cheaper than a new mattress.

      Read More
    • Memory foam topper
      Verified Purchase

      Sleeps awesome, I had looked for weeks and this was best one on the market!

      Read More
    • Most Helpful

    • Turns any mattress into a dream of pleasure!

      I purchased this 4" memory foam mattress topper as a last effort to find something that would help me sleep better. I have been fighting a few horrible disease's called Fibromyalgia and Rheumatoid Arthristis and Chronic Fatigue for years and have never slept through the night. I'm only 44yrs old and too young to feel so old. The first time I put on my memory foam topper, I just layed there with no pain and instant relief. I didn't even get into my pajamas; because I fell asleep within minutes and to my amazement, slept all night long in the same postion. I woke up in complete shock and actually for the first time could walk to the bathroom without feeling stiff and bouncing off my furniture to just hold me up because of the pain. There's not a prescription from any of my doctor's that could have provided me with such relief. Now my condition is getting so much better because I am actually sleeping through all four stages of sleep that your body needs to repair your muscles, ligaments, tendons, not to mention your state of well being from having a great night sleep! I highly recommend this topper to everyone, especially people who suffer from insomnia caused by pain that awakens you when ever you move at night. With this topper, I find that I do not move. This is the best investment which was so cost effective, I could have ever purchased. There's not a sleeping pill in the world that can out do this topper! Thank You Overstock for saving my life. I was at a very low time in my life from suffering such chronic pain day and night. A good nights sleep keeps pain at bay during the day. WOW...what a dream come true. Sincerely, Carolyn

      Read More
    • I swear by this!
      Verified Purchase

      I were a bit skeptical to buy this topper as I know like all of you out there, a good night sleep is priceless... was just thinking of getting rid of my mattress which is still in mid condition and got one of those Tempur Medic mattress instead...Last minutes, I have decided to try this one out first...... oh my Gosh, it was so very comfortable..& .how good was it???? I almost missed work this morning and it is just not so me to do that... My advice, spend monies to buy this first if you are thinking about replacing your mattress... it is really really Great for a fraction of what could cost you..and it is made by Serta...can't go wrong with that.. Please note of one thing, the instruction of how to open this topper was packed in the bottom of the box, so I tried to manually rolled the topper opened and Opps, it was a mistake...I did open it, but it took a lot of of me to do so.... Please do not attempt to do that, just open the topper from its wrapper and let it sit on the floor for at leasat 24hour to air out the smell, but also make it easier to roll it open later. One happy and repeat customer...

      Read More
    • good for its value
      Verified Purchase

      I wasnt going to review this product until I had it for a while. 1 year later, here's my review: PROS: - with memory foam pads, the thicker, the better. 4" is the thickkest ive seen available out there. - decently priced. you get what you pay for - never woke up with a bad back, also considering i sleep on my side and chest - i sleep longer CONS: - it is heat sensitive: if it's cold in the room, it's firmer, if it's hot, it's softer and it's no longer a "memory foam" but a regular foam. - with that said, the area/shape you sleep on is not really a "memory foam" because of warm body temperature - the more it is exposed to the air (especially the edges), the foam turns from white to yellow like the rest of the regular foams - it's about 2" short from regular mattress size. but i suppose that's to make room for the fitted sheet to cover the mattress and the extra 4" thick memory foam. - im about 120lbs, the firmness is perfect. but i dont know about those heavier than me, because like i said about the heat/temperature problem, you might find your self sinking down making it a bit uncomfortable in the summer.

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    • The future is now..
      Verified Purchase

      Let me start by saying I am a real person. A co worker began talking about his $3K "T-Pedic" bed and really piqued my curiosity. I have a Latex bed and have been happy with it for some time. Well, I stumbled onto Overstocks' memory foam section and saw the 1400+ positive reviews on this 4" topper so I decided to see what all the gushing was about. Let me tell you what you can expect from this product. I ordered the topper on Sunday and it arrived on Friday. For only $3 shipping charge, that is really good. I am very happy with the Overstock shipping. I got a tracking number and could follow the package from manufacturer to my home. I read that some people had rips or stains on their toppers. Mine arrived just fine thru DHL. And I was pleasantly surprised that it had almost no smell. I mean there was a "new" plastic smell, but not anywhere to the point of getting nauseus. Maybe the 5 day trip let the product breath and air out before I got it. But I must admit, the first night my wife and I had to put 3 layers of sheets to not smell the pad when your laying on it. Also I noticed that the manufacturer was Advanced Urethane Technology (even tho it is sold with a serta label), so maybe the quality control issues have been addressed by Serta using this new company. So I drag the box to the master bedroom, and open the box and pull out the foam. It was rolled like a burrito . I centered it on the mattress and took off the plastic covering. As soon as it began to breath, it expanded, Fast. It took less than 10 minutes to fully expand. I did not Force it open. This is where I think most people put tears in their toppers. Moving the foam before there is air in the cell structure is a recipe for disaster. Once fully expanded, the Topper was not as heavy as I though it would be. It is a little tacky, so if you pull it with force, it "could" rip, but just don't pull it. I was easily able to just "lift and push" it into place. Oh and I'm happy to report that the King size really does fit our King bed. Maybe an inch off, but nothing to complain about esp. when i was reading some horror story reviews of 3 inch short toppers. Another thing I am happy to report, is that the topper isn't snow white, but pretty close. So it doesn't look unsightly. But you will be buying a cover for it anyway so what does it matter. So it's unpacked, centered, and expanded, now for a test. WOW. Now this is comfortable! I am happy to tell you that I am convinced that we are in a new era in sleep technology. I know it sounds corny, but I couldn't believe how nice it was. I would compare it to a feather bed but WITH support, or several layers of down comforters that don't squash when laying on it. The thing is, these pads are only going to get better than they are now. I made the bed and did the wife test. She loves it! I surprised her as she didn't know it was on our bed till I told her to lay down. And I know this is going to sound repetitive, but it's true, not 10 minutes after laying down, she was fast asleep! No lie! I was next to her and I just couldn't help but laugh because I had read reviews where the same thing happened to others. It's that comfortable! Ok, so now for some nitty gritty. You do have to adjust to it. It took me and my wife 1 night. It's mostly a mental adjustment more than anything. You just have to move different, and realize that you will be comfortable in one or 2 positions the whole night. My wife and I are back and side sleepers. But you almost get into a routine because your body gets numb or hurts every hour or so on a plain mattress, well no longer. The only time I roll over now, is for breathing reasons, namely if I snore too loud on my back, I'll move to my side, or my wife will move me. :) But once I'm there, I'm done. We are both sleeping more deeply and feel so good, we honestly can't believe it. I can say with honesty that all pressure is alleviated on this topper. No more pinched hips or bad circulation in the arms or shoulders. No more aches, stiffness, or soreness. We simply love this memory foam. Now I do have some advice for those out there who need a more robust topper. This 4" topper is great even at 4lbs. density. But If I didn't have to share my bed , the 5 lbs. density would be my next purchase. These are the only 2 densities, you should ever spend your money on. less than 4lbs wont support body weight very well, and your frankly, just skimping on topper comfort and durability. And stay with either a 3" or 4" thickness. This extra inch helps but is not needed if you have a higher density. I had my wife laying on her back and side and did some measurements and found that even on her side she only used 2" inches of foam and even less at her shoulders (these 2 points are the heaviest). We then measured me (6 ft, 180lbs) and I only used a half inch more at both points. Plenty of margin left in the foam to compress. We then checked for spin alignment, and it was normal. The foam curved exactly to our bodies contours. I had to see this to believe it, but now I have and it's true. So we haven't had the hammock feel with our topper. But maybe it is because of our weight and mattress condition. If your petite, this 4" 4lbs. topper will be a perfect fit as my wife will attest. However, if your heavier, go for the 5lbs. density and if that is too firm, then 4lbs is your answer, or vice-versa. Once your have adapted to how to move on this memory foam, you will love it. The real key is to just use your legs. If your on your back, just bring one knee up and push your foot down, viola! Your rolled over with no fuss or extra muscle needed. In the end, you should not think this topper will make a trash mattress good. It will still conform to the uneven, lumpy surface of your bottom mattress. But if you have a decent one but it's too hard, it will do miracles. For the price, you can't go wrong. Just be sure you don't want a denser topper first and you'll love it. Having this 4" memory foam topper has opened my eyes that $3K for memory foam bed is just a massive markup. You can have the same comfort with a decent mattress or platform bed and 1 of these dense (4or 5 lbs.) toppers for a fraction of the cost. A little reading and shopping will save you thousand$, don't you owe yourself a good nights sleep? This foam is fantastic!

      Read More
    • Annie20
      Verified Purchase

      It's more comfortable than I expected and I had a very good night's sleep, FINALLY. Good merchandise at a good price makes me a repeat customer.

      Read More

    Questions & Answers

    • What is the firmness? Soft, medium, etc

      • I find the firmness to be soft because it melds to the the contours of your body. I bought one because I was having terrible hip pain and my massage therapist mentioned how much it helped her. After 2 days my hip and leg pain was gone. I highly recommend it.

      • I would say it's soft because you sink into it when you lay on it. I bought this for my sons bed because the mattress was a little firm then I ended buying one for my daughters bed as well because I liked so much!

      • I would say that it is soft. It looks firm sitting on your mattress but is very soft when you settle in. It is not so soft that you push through the 4 inches though once you lay down. In that sense it might be considered medium firmness. I have them on every bed in my house and host on AIr BnB and it is the number one compliment I get.

      • The mattress topper is soft and you really do sink in. Our old no flip latex foam mattress was making our backs hurt so we flipped it to the firm underside and added this topper. No more pain and very comfortable.

      • Very soft, you basically said sink, if your looking for firm support this is not the topper for you. The topper is comfy, but after sleep ping on it for hours my back hurts as it does not provide support, but in saying that, everyone is different and some do not need firm support.

      • Relatively firm. I'm very happy with it (full size). I say this in comparison to my girlfriend's mattress topper which is significantly softer.

      • This is a great topper. We had another brand that was way too stiff. We gave it away & bought another Serta. It's soft, yet supportive enough. Memory foam is wonderful!

      • It is soft, but has proven to keep it's shape. Very comfortable .

      • I feel that the topper is a medium firmness. It offers support while still alleviating any pressure points on your body. It cradles me, but I do not sink into it. This information is provided by a borderline plus-size curvaceous side-sleeping female who has been sleeping on the topper for a few weeks in an air conditioned (cool) room. Body type and room temperature was provided as a reference since it can influence how the topper conforms to you. Hope this helps.

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    • What's the price after the 60% off?

      • For additional pricing information, you can contact Customer Care at 1-800-The-BIG-O (843-2446).

    • Hello, If I buy this mattress topper for a full size bed, what cover do you have that would fit it best?

      • I have this in a king size and I use a king size mattress cover, but remember your comforter or bedspread will now be 4 inches higher also and will now show the box spring. Love this though, very comfy.

      • I use a full size mattress cover. Before I was using a full size fitted sheet that covered the foam .. I then placed another fitted sheet and top sheet that.t I slept on. That worked also. Actually my daughter still uses a fitted sheet on her bed as a cover.

      • I had purchased this topper in the king size and also purchased the Down Alternative Gusseted Design Euro Top Cover Item 1016039. It fits perfectly and very well made. The topper is comfortable not too firm and not too soft. I had purchased one for myself and my daughter.

      • Hello Diana. You have to take into consideration that your mattress will increase by about 4 inches. Since I generally use a king size comfortable on a queen size bed, there was little to know impact in how the comfortable hangs. Now sheets, that was a different issue. Meaning I had to purchase sheets with deeper pockets to fit over the mattress and topper. All in all it was/is worth the buy.

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    • I will be traveling with this so before purchasing I need to know the weight in pounds of the 4inch King memory foam mattress. Thanks!

      • The mattress topper is approximately 60 pounds in the king size.

      • It's heavy! And large, & once it's expanded it's very unwieldy. When we have moved, we've rolled it up, pulled a large construction sized trash bag over one end, then repeated that on the other end...taped the bags together. This was a king, if you have a smaller sized bed, it would be lighter, of course. Still, for traveling, I would try to make do with a thinner memory foam topper.

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    • I'm looking for a cover (that zips) for my topper, anybody know where i can find one?

      • We also have a king and it fits perfectly. No overhang and very comfortable.

      • I found one by typing in "topper cover zipper" in the search box, and multiple sites came up. I got the mattress topper cover at * I hope this helps.

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    • We have a king size bed 76 x 80. It is says this topper is 76 x 77. Will this work on our bed or will it move around? Also will it look funny? Do have this topper in the size we need?

      • We love ours! It will NOT move around. There might be a small gap since the dimensions are not equal, but could be disguised with a bedspread possibly. The 3 inch topper is also great! We have bought both cuz we have a beach house with King beds too.

      • I put a fitted bed pad on top of the topper to have a barrier between the foam pad and top sheet. Worked well. My husband had back surgery and this topper is very "spongy" and soft and you will sink right down in it. I couldn't sleep like that, but it works for him. Hope this helps.

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    • Hello, I am interested to buy a topper, but I was wondering is this one firm or soft? Reviews are saying both. I need firm one. Thank you in advance

      • If you need a firm one I would go with something else. We got it for our guest bedroom so it's not a big deal for us, plus my wife kinda likes it, but it would be too soft for my taste. We sleep on a 12" memory foam from Nature's Sleep in our bedroom and it's definitely a firmer feel than this Serta topper. I'm not sure how much the thickness has to do with it, but I get the sense that our Nature's Sleep one is just more dense overall, so I'd bet there are plenty of other brands that offer a firmer topper too.

      • Due to the subjective nature of firmness, comfort levels may vary. This is listed as a medium firmness.

      • It is VERY SOFT in my opinion and I love it that way. I would not recommend it if you want FIRM tho. Very comfortable and not HOT at all as some people said. It's a good value and a good product.

      • Thank you all for your answers I will look some more for firmer option. If anyone has any suggestion please let me know

      • It's not hard at all, very comfortable.

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    • Hi, may I know what's the weight and shipping dimensions for the QUEEN size topper? Thank you!

      • The weight of the queen size is 46 pounds. The dimensions H: 16 W: 16 L: 32.

    • what is the ILD number on the mattress topper?

    • Hi you seem to be out of stock for the queen size of this topper - any idea if you will get more ? Thanks

      • You can currently choose the queen option from the drop down options menu, we do have it in stock.

    • What are the weight and shipping dimensions(size) of the FULL size topper? Thanks.

      • Hello John.K, the full size topper weighs approximately 30 pounds and arrives in a shipping roll that is approximately 16 inches in diameter x 32 inches long. Thanks for shopping with us.

    • Our current mattress is too firm and I find it very uncomfortable. Would this topper be 'softer' or more gentle for sleeping? I guess my question is whether it is firm or soft?

      • Hello feereb9041, this item is designed to help make your mattress to feel softer. Please feel free to contact us again with any further questions. Thank you for shopping with us!

      • This topper has stopped all my hip pain when trying to sleep. I use to have a pillow between my legs, but not anymore. It does add height to your bed, but I love it.

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    • Is it ok to cover the foam mattress with a mattress protector or do I get a more comfortable sleep without it. I've just purchased this foam mattress and currently allowing it to fold out naturally. I also purchased a mattress cover, but on second thought it should ask you if it's best I not use the cover.

      • Hello James E., a cover is not necessary but it also will not affect the function of the mattress. Thanks for shopping with us!

    • Hi! Can we use this topper on top of our current memory foam mattress? Our memory foam is a little too soft for our back and we want to have a little more firmness. Will this be useful?

      • Hello Chiah, this topper would work well with any mattress. Thanks for shopping with us!

    • My husband weighs 300lbs was wondering if this would benefit him.

      • I believe it would! I am over 300 myself, and used to wake up with so much back pain that it was hard to walk to the bathroom in the morning. Memory foam was the answer to my prayers! I am back on Overstock to purchase a new topper after 10+ years on the old one. The old one is still comfortable, but I tore it moving it for the umpteenth time. I'm going for the 4" 4 lb density this time. :)

      • Hello rednexgrl1, we strongly recommend reading the customer reviews to see if this item will benefit your husband. Thanks for shopping with us.

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    • What is the ILD number of this mattress?

      • Hello woofy, the ILD number for this mattress topper is 12. Thank you for shopping with us.

    • what is the reason that we are able to buy Serta products for such less money than retail price? I found this exact one in Kohls for about $*** dollars. Is this any different? Is it damaged? Is it even Serta brand? How can I prove that it is Serta brand before purchasing? Can I return it?

      • Hello Lhops13, due to our agreements with our suppliers we are able to offer these items at such a great rate. This item is new and has not been previously owned or damaged. This item also includes a 3 year warranty as well. Overstock stands behind each of our items and authenticity. Thank you for shopping with us.

    • Can this be used on the Dorel Home Products click clak bed when open measuring 43" wide. It is so very uncomfortable now and was thinking of giving it away to the Salvation Army and it has been slept on only 20 days!!

      • Hello edward12d, this item can work on top of a Dorel Home Product as well. Please feel free to contact us again with any further questions. Thank you for shopping with us!

    • Can a heated mattress pad be used with this topper?

      • Hello suenov, you are welcome to use an electric topper with this product, however If you choose to use an electric pad or blanket with your topper it is recommended that your electric pad or blanket has been UL approved and is in good working condition with no frayed wires. Thank you for shopping with us.

    • Hello, What is the density of this foam mattress?

      • Hello searching,the density on this mattress is 4 pounds. Have a great day!

      • Absolutely more than enough. I have had this topper for two years. I am 6'1 228 lbs and wife is 5'9 175 lbs and it not only supports us without sinking, the topper shows no signs of cradling or canoing. It still has the exact shape and feel of when we first out it on the bed.

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    Shopping Tips & Inspiration

    Shipping & Returns

    This product is not yet released, and is expected to ship on Jan. 26, 2006.

    This date is subject to change. In order to assure you receive's low price on this item, your credit card will be charged upon order placement. The item will ship immediately upon release.


    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
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    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.


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