Hearth & Harbor 12" King Size Mattress in a Box, Cooling King Memory Foam Mattress, CertiPUR-US Certified & Odor Free
Hearth & Harbor 12" King Size Mattress in a Box, Cooling King Memory Foam Mattress, CertiPUR-US Certified & Odor Free
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Hearth & Harbor 12" King Size Mattress in a Box, Cooling King Memory Foam Mattress, CertiPUR-US Certified & Odor Free

4.7 stars out of 40 reviews
(4.7)|
40 ratings
Bed Size:King-Out of stock
Mattress Thickness:12 in-Out of stock

Key item features

  • Cooling Technology: Cooling Graphite Memory Foam Sleep Technology, featuring a top layer infused with green tea extract, absorbs sweat and neutralizes odors for a refreshing sleep environment.
  • Heat Dissipation: An egg crate graphite foam middle layer efficiently draws heat away from the body, providing consistent comfort.
  • Adaptive Support: A thick, body-contouring memory foam layer delivers adaptive support for all sleep positions, alleviating pressure points.
  • Convenient Shipping: The king size memory foam mattress ships vacuum-packed in a box for easy transport and setup, requiring 24-72 hours for full expansion.
  • CertiPUR-US Certified: Constructed with three layers of CertiPUR-US-certified memory foam, ensuring a consistently cool and odor-free sleep environment.
  • Breathable Cover: An OEKO-TEX certified breathable knit cover adds an extra layer of softness and optimizes airflow for enhanced comfort.
  • Available Sizes: This memory foam mattress is available in King, Queen, Full, and Twin sizes, each offered in 8, 10, and 12-inch thicknesses.
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Current price is $479.99
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4.7 out of 5 stars
stars40 ratings22 reviews
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Reviews summary

Pros
  • : Provides excellent support and cushioning.
  • : Offers great value at this cost.
  • : Provides a comfortable sleeping experience with it.
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Showing 1-3 of 22 reviews

Jul 4, 2025
Rhonda
Item details
Bed size: Full
Mattress thickness: 8 in
5 out of 5 stars review

Verified Purchase

Nice Quality %26 Comfort At A Reasonable Price

It was the second night that I slept on this mattress that impressed me. Upon arrival I was concerned that I'd misread dimensions, the mattress was folded in half and extremely compact. I'd had it on the platform maybe 10-hours before I went to bed and it was maybe 8" thick. The second night the mattress expanded to the full 10" thickness and is comfortable. --- It's my first experience with a full foam mattress so I'm sort of re-learning turning over. The mattress seems to have good support but at the same time my body kind of gullies into a position so that turning my torso over requires a bit of a lift before turning. Only time will tell if I can adapt to this change. --- I like the light weight of the mattress and the fact that I don't need a box spring. I thought I might need a board to go over my platform as the slats are further than the recommended 3" apart but it's been nearly a month and it doesn't seem to be an issue at all. ---- I do sleep well on this mattress and wake feeling good which is, to me, the most important measure for a good mattress. --- I'd buy this again and recommend it. I think it's a good value and arrived pretty quickly, too.

Incentivized Review
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Jul 23, 2025
Lucretia
Item details
Bed size: Twin
Mattress thickness: 12 in
5 out of 5 stars review

Verified Purchase

I love this mattress. I brought it for my mom so that she can sleep on the first floor because she has trouble getting up and down the steps. It's like sleeping on a cloud. It's so comfortable that I almost fell asleep on it when I was trying it out for her. Great quality is packed very well and a great price.

Incentivized Review
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Aug 3, 2025
Patricia
Item details
Bed size: Queen
Mattress thickness: 12 in
5 out of 5 stars review

Verified Purchase

Shipping was fast, opened box and plastic packaging and left it to expand overnight... put it on the platform base and tried it out... I didn't wake up the next morning in pain... back pain disappeared... very comfortable mattress

Incentivized Review
Helpful?4YQ7VL4QHO2R6643208276