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Serta

Serta ThermaGel Cooling, Pressure-Relieving Memory Foam Mattress Topper, 3 Inch, Twin Blue

  • Based on 7,474 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Mar 19
Order within 19 hours and 4 minutes
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Size: Twin 74"x38"


Set name: 3 Inch


Features

  • 100% Memory Foam
  • 100% MEMORY FOAM: Premium memory foam construction delivers a soft yet supportive sleep surface
  • BREATHABLE GEL-INFUSED COMFORT: Engineered with airflow-enhancing gel for cooler, more comfortable rest
  • THERMAGEL COOLING TECHNOLOGY: Infused particles draw heat away to help maintain a refreshing sleep temperature
  • BODY-CONFORMING SUPPORT: Adapts to the unique contours of your body for personalized comfort and pressure relief
  • MATTRESS ENHANCEMENT: Adds comfort and support while helping to extend the life of your existing mattress

Description

Sleep like you’ve never slept before on this mattress topper from Serta. As part of the Serta family of comfort solutions, this ThermaGel memory foam topper can improve any night’s rest on top of virtually any mattress. This adaptable mattress pad conforms to the sleeper’s unique body shape to provide superior support for joints and pressure points while remaining breathable with ThermaGel particles to keep the sleeping surface cool all night long. ThermaGel is a trademark of Leggett & Platt, Inc.

Brand: Serta


Color: Blue


Size: Twin 74"x38"


Fabric Type: 100% Memory Foam


Special Feature: ThermaGel Cooling


Brand: Serta


Color: Blue


Size: Twin 74"x38"


Fabric Type: 100% Memory Foam


Special Feature: ThermaGel Cooling


Closure Type: Pull On


Product Care Instructions: Spot Clean Only


Water Resistance Level: Not Water Resistant


Age Range (Description): Adult


Material: Memory Foam


Model Name: ThermaGel


Number of Items: 1


Manufacturer: Elite Comfort Solutions


UPC: 094325278831


Product Dimensions: 3 x 38 x 74 inches


Item Weight: 12.57 pounds


Item model number: 12271


Refill: memory-foam


Assembly required: No


Batteries required: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Mar 19

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Like sleeping on a cloud – a perfect refresh for my mattress! ⭐⭐⭐⭐⭐
Size: Full 74"x53" Set name: 3 Inch
I bought this Serta ThermaGel topper (3-inch, Full size) to add some life to an older mattress that was starting to feel a bit too firm and lumpy. I wanted something that would offer pressure relief without making me overheat, and this has been a fantastic upgrade. Pros: Instant Comfort Upgrade: The 3-inch thickness is substantial. You definitely sink into it, but it feels supportive rather than just squishy. It significantly reduced the pressure points on my hips and shoulders. Cooling Effect: I tend to sleep hot, so I was hesitant about memory foam. However, the "ThermaGel" technology actually seems to work. It feels breathable and stays cooler than standard yellow foam toppers I've used in the past. Brand Quality: It’s nice to see it’s "Made in the USA." The foam feels dense and durable, not cheap or flaky. It expanded to its full shape pretty quickly after unboxing. No Slip: The texture of the foam seems to grip the mattress well enough that it doesn't slide around too much under the fitted sheet. Cons/Things to Note: Initial Smell: Like almost all memory foam products, it had a slight "new foam" smell right out of the box. I let it air out for about 24 hours before putting sheets on it, and the smell went away completely. Care: The instructions say "Spot Clean Only," so I highly recommend using a waterproof or thick mattress protector over it just to keep it clean, as you can't throw this in the washing machine. Verdict: If you aren't ready to buy a brand-new mattress but need better sleep quality, this is a very cost-effective solution. It turned a mediocre bed into a luxury feel. ... show more
Reviewed in the United States on December 2, 2025 by DPM
    • Great value Great topper!!
Size: King 79"x75" Set name: 3 Inch
Review Image by TAMMY T TAMMY T
Review Image by TAMMY T TAMMY T
The media could not be loaded. EXACTLY what i wanted. My family bought me a similar Serta topper 5 yrs ago after a major surgery. My matress has seen better days. The first one was very comfortable and I was still using it but my large dog digs at the bed before laying down and did rip it. Honestly, the first one was a little too soft. I had a full open abdominal so those muscles were cut and I have bad joints , so sitting up can be tricky. I found you sink in and had to actually roll to get up. This Serta topper is much more comfortable & much easier to get up from because all though soft, it is firmer. It bounces right back after you get up. . It gives but doesn't make you sink. This helps sleeping when you have joint pain. I didnt feel as hot with it as much as the first either but could just be me. It came in a solid box ,( grandkids LOVE the box with the sheep and large flaps lol) compressed, well wrapped and in a duffle bag. It was fully expanded as soon as I opened it. I didnt notice any smells. This was the best sleep I've had in a long time and at this price I've considered buying an extra when it inevitably rips and wears down but I've read some reviews online that toppers didn't fully expanded after stored a long time. Ill just enjoy this till it dies and replace it then. It was very fast shipping also. I HIGHLY RECOMMEND THIS & WILL buy again! ... show more
Reviewed in the United States on September 27, 2025 by TAMMY T TAMMY T
    • Cooling Comfort That Works for Both Side & Back Sleepers
Size: Full 74"x53" Set name: 2 Inch
As a side sleeper and with my wife being a back sleeper, this Serta ThermaGel 2" memory foam topper noticeably improved sleep quality for both of us. It adds just the right amount of pressure relief without feeling too soft, and the cooling gel actually helps prevent overheating. Easy upgrade that made our mattress much more comfortable—great balance of support and comfort. ... show more
Reviewed in the United States on January 7, 2026 by Joe
    • Comfortable but maybe not cooling....
Size: Queen 79"x59" Set name: 2 Inch
I bought the 2" queen topper. It came in a box and rolled up in plastic. I opened it up and laid it flat for the recommended 24 hours. It had absolutely zero smell, which I was pleased about. I added it top a firm mattress. It did make the mattress more comfortable! However, I definitely don't think its cooling advertisement is correct. I am never hot over night and found myself sweating twice! I'm hoping it's the new bedding I added instead of the topper and will try just a sheet tonight. I will update my review if that doesn't help. Overall, nice product. Fits on my queen mattress well. It was easy to lay out on the bed - though it does move a little when putting tight sheets over it. Definitely improved the softness of my very firm mattress! ... show more
Reviewed in the United States on August 4, 2025 by Colleen
    • Great mattress topper!
Size: Queen 79"x59" Set name: 3 Inch
The best sleep I've had was with this topper. I purchased it to go onto a Murphy bed that had a stiff spring mattress. It was soft and it was cooling which allowed me to sleep comfortably! I would absolutely recommend.
Reviewed in the United States on January 5, 2026 by Kenny B
    • Well worth it!
Size: Twin XL 79"x38" Set name: 3 Inch
Bought this for my daughter’s dorm bed. She LOVES it!! Her friends all say her bed is the most comfortable.
Reviewed in the United States on March 1, 2026 by Ammanda

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