Serta ThermaGel Cooling, Pressure-Relieving Memory Foam Mattress Topper, 3 Inch, King, Made in The USA
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Availability:
In Stock.
Arrives
Monday, May 11
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Size: King 79"x75"
Set name: 3 Inch
Features
- 100% Memory Foam
- BREATHABLE GEL-INFUSED FOAM: Engineered with ThermaGel-infused memory foam to provide cooling comfort and support
- COOLING TECHNOLOGY: ThermaGel particles help create a refreshing sleep surface by drawing heat away from the body
- CONTOURING SUPPORT: Adapts and conforms to your bodys natural shape for enhanced comfort and targeted support
- MATTRESS ENHANCEMENT: Adds a layer of comfort and helps extend the life of your existing mattress
- MADE IN THE USA: Proudly crafted in the USA using high-quality materials for lasting durability
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: King 79"x75"
Fabric Type: 100% Memory Foam
Special Feature: Breathable, Cooling, Durable, Premium, Pressure Relief
Brand Name: Serta
Age Range Description: Adult
Model Name: ThermaGel
Number of Items: 1
Manufacturer: Elite Comfort Solutions
UPC: 094325278879
Manufacturer Part Number: 12275
Model Number: 12275
Unit Count: 1.0 Count
Item Type Name: Serta ThermaGel Memory Foam Mattress Topper
Other Special Features of the Product: Breathable, Cooling, Durable, Premium, Pressure Relief
Closure Type: Pull On
Water Resistance Level: Not Water Resistant
Fabric Type: 100% Memory Foam
Product Care Instructions: Spot Clean Only
Material Type: Memory Foam
Size: King 79"x75"
Item Display Dimensions: 3 inches
Color: Blue
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, May 11
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
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.
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Reviewed in the United States on December 2, 2025 by DPM
Size: King 79"x75"
Set name: 3 Inch
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!
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Reviewed in the United States on September 27, 2025 by TAMMY T
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.
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Reviewed in the United States on January 7, 2026 by Joe
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!
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Reviewed in the United States on August 4, 2025 by Colleen
Size: Queen 79"x59"
Set name: 3 Inch
Our son moved into an apartment this year and we had been doing everything we could to save money and that included the mattress. Anyway we bought a bed in a box & it said it was med-firm. My son insisted it was a rock & mattress must go. Returning mattress meant we paid shipping back not happening. In comes Serta Mattress Topper. We purchased it but didn't allow him to open & try it out until move in day; 2 months of agony. His bed is assembled, hard mattress is placed down, then topper, of course of all cruelty bed had to be made first. He lays down and declares "best bed ever"! So to all of you parents out there we know our stuff! He declares it's like sleeping on a cloud so hope that helps. It hugs him in all the right places when he lays down. He is a hardcore amateur athlete so comfort when you lay down is important. He has three roommates, which he made them all lay on the bed, he was declared most comfortable bed of the apartment!
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Reviewed in the United States on January 3, 2026 by Inspired_Daily
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
Size: Full 74"x53"
Set name: 3 Inch
Has made the mattress more comfortable yet I am not pleased at how often it is sliding off my mattress and constantly getting misaligned. I wish I just bought a mattress topper with the cover included- others have the straps to help prevent this. I got this on a good deal but now I’m having to order a a cover to keep it in place.
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Reviewed in the United States on March 16, 2026 by Dianne