Dyfun Twin XL 4 Inch Gel Memory Foam Mattress Topper, Medium Firm Support with Cooling Non-Slip Cover
Dyfun Twin XL 4 Inch Gel Memory Foam Mattress Topper, Medium Firm Support with Cooling Non-Slip Cover
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DyFun

Dyfun Twin XL 4 Inch Gel Memory Foam Mattress Topper, Medium Firm Support with Cooling Non-Slip Cover

Dyfun Twin XL 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 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 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 KingGel Memory Foam Mattress Topper with Cooling Technology CertiPUR US Certified Non Slip Design Machine Washable Cover 4 Full
Bed Size:Twin-XL
Thickness:4 in
Pattern:Medium

Key item features

  • Medium Support for Balanced Comfort- Designed with medium-density gel memory foam, this mattress topper delivers a balanced feel—soft enough for comfort, yet supportive enough to prevent sinking and reduce mattress sagging.
  • Cooling Gel Memory Foam for Pressure Relief- Cooling gel–infused foam with breathable fabric contours to your body to relieve pressure points while helping regulate sleep temperature—ideal for hot sleepers seeking comfort without overheating.
  • Certified Safe- CertiPUR-US and OEKO-TEX certified, ensuring the foam is durable and the cover is non-toxic and free from harmful chemicals.
  • Upgraded Stay-Put Design- Enhanced stability helps keep the topper securely in place throughout the night, ensuring uninterrupted comfort without shifting or bunching.
  • Safe, Easy-Care & Multiple Options- Made with CertiPUR-US and OEKO-TEX certified materials. Features a removable, machine-washable cover and is available in multiple sizes and thicknesses (2”, 3”, 4”) for a customized sleep upgrade.
Current price is $89.99
Price when purchased online
  • Free shipping
  • Free 90-day returns

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Ships in the manufacturer's original packaging, which may reveal the contents.

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About this item

Product details

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Customer ratings & reviews

4.2 out of 5 stars
stars412 ratings107 reviews
How item rating is calculated
  1. 5 stars65% (267)
  2. 4 stars15% (62)
  3. 3 stars8% (32)
  4. 2 stars3% (13)
  5. 1 star9% (38)

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Showing 1-3 of 107 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?5TJDZ7HEEX4919381050296
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?5TJDZ7HEEX4919381050296
Jan 12, 2026
nelle
Item details
Bed size: Queen
Thickness: 4 in
5 out of 5 stars review

Verified Purchase

Good purchase

Im a plus size woman with sciatica issues. It was easy to set up. First touch, soft and felt amazing. It does help with my sciatica issues. Ive had it for a while now and I recently rotated and woke up feeling better. its still fluffy. In the beginning just had to get use sitting up in bed. But its worth it.

Helpful?5TJDZ7HEEX4919381050296