Allswell 4 in Memory Foam Mattress Topper Infused with Cooling Diamond Gel, King
Allswell 4 in Memory Foam Mattress Topper Infused with Cooling Diamond Gel, King
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Allswell

Allswell 4 in Memory Foam Mattress Topper Infused with Cooling Diamond Gel, King

1,139 ratings
Allswell 4 in Memory Foam Mattress Topper Infused with Cooling Diamond Gel, KingAllswell 4 Memory Foam Mattress Topper Infused with Cooling Diamond Gel KingAllswell 4 Memory Foam Mattress Topper Infused with Cooling Diamond Gel FullAllswell 4 Memory Foam Mattress Topper Infused with Cooling Diamond Gel QueenAllswell 4 Memory Foam Mattress Topper Infused with Cooling Diamond Gel Twin
Bed SizeKing

Key item features

  • Cooling Comfort: Features diamond-infused gel memory foam with Cooling Diamond Technology, actively drawing heat away to reduce buildup throughout the night.
  • Reversible Design: Offers a two-sided option, presenting an airflow side for added support and a plush, cool-to-the-touch conforming feel on the reverse.
  • King Sizing: Precisely sized to fit a standard King mattress, with approximate dimensions of 75 inches W x 79 inches L x 4 inches H.
  • Medium Firmness: Provides a medium firmness level, delivering a balanced feel and adding supportive comfort for mattresses that feel too firm.
  • Pressure Relief: Designed to offer pressure relief and a cooler sleep surface, with memory foam cushioning key areas such as shoulders, hips, and back.
  • Easy Setup: Facilitates a fast comfort refresh; simply unbox, unroll, and place the topper onto your existing mattress.
  • Simple Care: Maintenance is straightforward, as the mattress topper is designated for spot clean only.
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About this item

Product details

Specifications

Customer ratings & reviews

4.3 out of 5 stars
stars
1,139 ratings281 reviews
How item rating is calculated
  1. 5 stars73% (828)
  2. 4 stars9% (108)
  3. 3 stars5% (62)
  4. 2 stars2% (27)
  5. 1 star10% (114)

Reviews summary

Pros

  • : Provides breathability for comfort.
  • : Relieves back, side, and joint pain during sleep.
  • : Made of thick and comfortable fabric.
  • : Offers additional cushioning and body support.
  • : Offers quality at a reasonable cost.

Neutral

  • : Topper increases thickness by 4in but creates sheet overhang
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Showing 1-3 of 281 reviews

Sep 1, 2026
Reviewer name: Alicia
Item details
Bed size: Queen
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Massive difference

So we were staying out of town at Great Wolf Lodge, and the bedding unfortunately was awful and there was no way I was going to be able to sleep in that bed for four more nights so I ordered this and it made a huge night and day difference, so thankful I did. It definitely reduced my pain and almost took it all away, it seems like a very durable topper as well, very heavy and sturdy as well as the cooling effect I love.

Helpful?3XBU3QEHFYHF5252290147
Sep 25, 2026
Reviewer name: Elizabethan
Top Reviewer
Item details
Bed size: King
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

The memory foam mattress topper that I received looks different from the one pictured. It is heavier than expected and appears to be 5" thick instead of 4. It has a wave pattern on top, instead of the egg crate look. I bought the king size so I could cut it to fully cover my queen size mattress. It is very comfortable with the wave side up. Not sure why they have it pictured with the wave side down.

Helpful?3XBU3QEHFYHF5252290147
Sep 17, 2026
Reviewer name: Christine
Top Reviewer
Item details
Bed size: Full
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I bought this bc This has no gel in it. The gel in these toppers makes them way too mushy for bad backs. This one is Incredible. It's not mush foam. It's supportive foam. I'm very athletic(I hike 5 miles daily!)%26 it has helped my sleep immensely!' I'm also almost 60.

Helpful?3XBU3QEHFYHF5252290147
Current price is $156.00
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