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

  • Based on 9,826 reviews
Condition: Used - Like New
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Availability: Only 1 left in stock, order soon!
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Arrives Dec 7 – Dec 8
Order within 2 hours and 49 minutes
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Size: King


Style: 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


Fabric Type: 100% Memory Foam


Special Feature: Breathable, Cooling, Durable, Premium, Pressure Relief


Brand: Serta


Color: Blue


Size: King


Fabric Type: 100% Memory Foam


Special Feature: Breathable, Cooling, Durable, Premium, Pressure Relief


Closure Type: Blue


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: 094325278879


Product Dimensions: 79 x 75 x 2 inches


Item Weight: 23.9 pounds


Item model number: 12275


Refill: gel, 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: Dec 7 – Dec 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great value Great topper!!
Size: King Style: 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! ... show more
Reviewed in the United States on September 27, 2025 by TAMMY T TAMMY T

  • Good mattress topper for sure
Size: Full Style: 3 Inch
Very comfortable. I’ve had a bad back from sleeping on the couch and had a few back injuries. I think this firm yet soft mattress topper will help with healing my back after having it for only a day. Seems like it’s good quality too at an affordable price.
Reviewed in the United States on October 9, 2025 by Mike

  • Comfortable but maybe not cooling....
Size: Queen Style: 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

  • Instant Comfort Upgrade with No Strong Odor!
Size: Full Style: 3 Inch
I bought this 3-inch cooling, pressure-relieving memory foam topper for my daughter’s bed and she noticed the difference the very first night. It’s made her mattress much more comfortable and supportive, and it’s actually getting even better as it breaks in over the first week. Another pleasant surprise: it didn’t have a strong smell out of the box and still hasn’t developed one after more than a week of use. Cool, comfy, and no funky odor — exactly what we were hoping for! ... show more
Reviewed in the United States on September 29, 2025 by Matt

  • The most comfortable mattress topper!
Size: Full Style: 3 Inch
Every time i sleep on this i have the best sleep. My boyfriend has scoliosis and it helps his back so much. I love the cooling effect, it wraps around your body so well for cooling back/neck support.
Reviewed in the United States on September 8, 2025 by Jaynae Johnson

  • Fit with an inch or so to spare
Size: King Style: 3 Inch
My decades old Posturepedic mattress was taking a toll on my back. It is just too firm for me to sleep comfortably so I needed help. This 3-inch mattress topper helps. It relieves the stress on my spine caused by my rock-hard mattress and provides some pain relief when I am on my side. Its durability is yet to be determined. The topper feels cool to the touch but after lying on it for a while there is a warmth that seeps through. This might be a function of the topper cover that I bought separately, or it could be a function of the memory foam itself. This is not a deal breaker although I live in the tropics. I think it is value for the money spent. So far, so good. It came nicely packaged in its own bag, a pleasant surprise. It is a tad too soft but has enhanced by sleep quality. Probably a 4-inch topper would have been just perfect, but this works okay. There was a faint "new" smell when the memory foam was laid out to air but that has gradually faded. It seems to bounce back to its original thickness after sleeping on it. Overall, it has provided some softness to a too-firm mattress, which was the purpose of getting it. Durability is yet to be determined. ... show more
Reviewed in the United States on September 18, 2025 by JBF

  • A little too good. Beware.
Size: California King Style: 3 Inch
It is great, super comfy and really good at absorbing movement. Why only 3 stars? Because, dear reader, it will absolutely kill your sex life. It was impossible for us to be intimate on this thing. Also, it says it is cooling but this thing traps A LOT of heat. If you're abstinent and it is cold, it is perfect. But if not, beware. ... show more
Reviewed in the United States on August 31, 2025 by grace jones

  • Super comfy, not much memory
Size: King Style: 3 Inch
This mattress pad covers our King size Seally mattress very well. I let it air out for one day, and I didn’t notice any weird smell at all. Our mattress is firm, so this pad adds a wonderful cushion. The pad is NOT hot at all, it’s the perfect temperature. People who are saying it’s hot might need to check their sheet material (microfiber is just a fancy word for plastic). Two things: if your mattress is old and crappy, this will not fix it. It provides no support, just softness. The other thing: it’s not really memory foam (hence only 4 stars). It is not very dense, but very soft. Again, works well for me and my firm mattress, but the description is not really accurate! ... show more
Reviewed in the United States on July 21, 2025 by Bianka Majchrowicz Bianka Majchrowicz

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