Serta 3" Cooling Coppergel Memory Foam Mattress Topper, California King
Serta 3" Cooling Coppergel Memory Foam Mattress Topper, California King
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Serta 3" Cooling Coppergel Memory Foam Mattress Topper, California King

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Bed Size:California King
Assembled Product Height:3 in

Key item features

  • Cooling Comfort: Copper-infused gel beads channel heat away from the body, providing a cooler sleep experience.
  • Conforming Support: Memory foam with coppergel offers conforming support for enhanced comfort.
  • Antimicrobial Properties: Copper continuously destroys microbes, contributing to a naturally antimicrobial sleep surface.
  • Pain Relief: Helps to soothe and stabilize the back, joints, and muscles during sleep.
  • Enhanced Sleep: Adds an extra layer of comfort to improve overall sleep quality.
  • Mattress Revitalization: Extends the life of an existing mattress or changes its comfort level.
  • California King: Specifically sized for California King mattresses.
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Current price is $161.99
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About this item

Product details

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Customer ratings & reviews

4.3 out of 5 stars
stars180 ratings94 reviews
How item rating is calculated
  1. 5 stars70% (126)
  2. 4 stars9% (17)
  3. 3 stars7% (13)
  4. 2 stars4% (8)
  5. 1 star9% (16)

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Showing 1-3 of 94 reviews

Feb 3, 2026
Patricia
Item details
Bed size: Full
Assembled product height: 3 in
5 out of 5 stars review

Verified Purchase

When I took it out of the box I looked at it and thought, this will be going back for sure. I decided to do as the instructions suggested before totally writing it off as a bad purchase. I let it sit overnight and when I checked it the next morning it was perfect. I was very surprised. It is nice and thick and it responded as most memory foam, it forms to your body. As for my arthritis, well I still feel soreness when I am on my side even with this topper but I don't think many mattress/toppers will totally eliminate that. So if you order one, don't judge it by how it looks when you take it out of the box, do as instructed and check it the next day.

Helpful?8749d800-0b0d-11f1-8e30-63e7131886fb367447226
Apr 22, 2026
Addy
Item details
Bed size: Twin-XL
Assembled product height: 2 in
5 out of 5 stars review

Verified Purchase

Awesome!

This is a great memory foam topper. It was shipped in a Serta box and came in a Serta bag. This is quality memory foam with a little support. It takes awhile to expand so dont pull it apart. Let it expand on its own. I highly recommend!

Helpful?8749d800-0b0d-11f1-8e30-63e7131886fb367447226
Mar 7, 2026
Lois
Item details
Bed size: King
Assembled product height: 3 in
5 out of 5 stars review

Verified Purchase

Good quality, good feel, reasonable price

But a new good name, brand hybrid bed, which was slightly too firm and this mattress topper made it perfect. It's not too mushy. It's just right for my comfort and the whole thing is still firm but soft.

Helpful?8749d800-0b0d-11f1-8e30-63e7131886fb367447226