DyFun 4" Full Gel Memory Foam Mattress Topper with Cooling Cover, CertiPUR-US Certified, Non-Slip
DyFun 4" Full Gel Memory Foam Mattress Topper with Cooling Cover, CertiPUR-US Certified, Non-Slip
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DyFun

DyFun 4" Full Gel Memory Foam Mattress Topper with Cooling Cover, CertiPUR-US Certified, Non-Slip

DyFun 4" Full Gel Memory Foam Mattress Topper with Cooling Cover, CertiPUR-US Certified, Non-SlipGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 FullDyfun Full 3 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 Twin XLDyfun California King 4 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverDyfun Twin XL 4 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverDyfun King 3 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 3 KingGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 3 TwinGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 3 Twin XLGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 TwinGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 3 FullGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 KingDyfun Twin 4 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 California KingGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 QueenGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 3 QueenDyfun Twin 3 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverDyfun Full 4 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverDyfun Queen 3 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverDyfun Twin XL 3 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverDyfun Queen 4 Inch Gel Memory Foam Mattress Topper Medium Firm Support with Cooling Non Slip CoverGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 3 California King
Bed Size:Full
Thickness:4 in
Pattern:Plush

Key item features

  • Cooling Comfort: Features cooling gel memory foam that adapts to body curves, relieving pressure points and keeping users cool, ideal for hot sleepers. Includes a breathable, cool-touch cover for added refreshing comfort.
  • Certified Safety: Made with CertiPUR-US and OEKO-TEX certified foam, ensuring it is free from harmful chemicals and safe for adults and teens.
  • Secure Placement: Upgraded non-slip design enhances stability, keeping the topper securely in place all night for consistent comfort without shifting or bunching.
  • Effortless Maintenance: Removable and machine-washable cover makes cleaning hassle-free, keeping the topper fresh and hygienic.
  • Versatile Sizing: Available in 2, 3, and 4-inch thicknesses and sizes like Twin, Queen, King, and Cal King to fit various beds.
  • Convenient Delivery: Compressed and delivered in a compact roll for hassle-free setup; simply unbox, unroll, and allow it to expand.
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Current price is $99.99
Price when purchased online
  • Free shipping
  • Free 90-day returns

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About this item

Product details

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Customer ratings & reviews

4.2 out of 5 stars
stars416 ratings108 reviews
How item rating is calculated
  1. 5 stars65% (269)
  2. 4 stars15% (63)
  3. 3 stars8% (33)
  4. 2 stars3% (13)
  5. 1 star9% (38)

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Showing 1-3 of 108 reviews

Feb 21, 2026
Walmart customer
Item details
Bed size: Full
Thickness: 4 in
Pattern: Plush
5 out of 5 stars review

Verified Purchase

The Best Buy Ever!

i would buy another one if i need it. its BEST topper i have ever bought an ive bought many . its so soft an i have really bad back an hip troubles an this took pain away in the morning i wasnt hurting as bad . if you are looking for a soft cloud to sleep on buy this .

Helpful?5TJDZ7HEEX4915400568431
Jun 20, 2025
Stormy
Item details
Bed size: King
Thickness: 4 in
5 out of 5 stars review

Verified Purchase

Good purchase

I purchased this 4” mattress topper to go on top of a very uncomfortable, old, hard mattress. It has made a world of difference. I no longer wake up feeling aches and pains. The mattress topper comes conveniently already inside the cover, and expands as promised within the cover. The topper and the cover seem to be of a good quality. I would recommend this product as a good purchase.

Incentivized Review
Helpful?5TJDZ7HEEX4915400568431
Jan 3, 2026
Nancy
Item details
Bed size: Full
Thickness: 4 in
5 out of 5 stars review

Verified Purchase

Family came for Christmas and my adult grandson with back problems slept on it. The topper made my futon, which also came from Walmart 8 or 10 years ago, very comfortable. Easy to put on and he said it was great to sleep on. Also reasonably priced.

Helpful?5TJDZ7HEEX4915400568431