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Sealy Dreamlife 12” Hybrid Mattress-in-a-Box, King, SealyComfort Gel Memory Foam, SealyResponsive Encased Coils, Surface-Guard Technology

  • Based on 122 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Oct 18 – Oct 19
Order within 1 hour and 14 minutes
Available payment plans shown during checkout

Style: 12"


Size: King


Features

  • 2 SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most
  • 2.25 SEALYSUPPORT TRANSITION FOAM: This additional layer of high-density foam enhances the overall comfort of the king hybrid mattress by offering extra support and durability
  • 7 SEALYRESPONSIVE ENCASED COILS: Featuring individually encased coils, this king memory foam mattress provides targeted support across the entire surface, allowing for independent movement and reduced motion transfer
  • CERTIPUR-US CERTIFIED: The Sealy Dreamlife mattress foam meets the strict standards set by CertiPUR-US, ensuring it is made without certain harmful chemicals including formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, or mercury, lead or other heavy metals.
  • SURFACE-GUARD TECHNOLOGY: Built-in antimicrobial protection with Surface-Guard Technology helps prevent the growth of bacteria and the buildup of allergens on the mattress surface

Description

This Sealy® Dreamlife™ 12” Hybrid King Size Mattress is designed to help you stay cozy all night (or all day) and wake up feeling refreshed. And it’s made by Sealy®, a leader in quality sleep products for over 140 years. Advanced SealyComfort™ gel memory foam adapts and responds to every part of your body to provide pressure relief and a personalized sleep experience, while SealySupport™ Transition Foam enhances the overall comfort of the mattress and adds long-lasting durability. SealyResponsive™ Encased Coils move independently for targeted support across the mattress as advanced edge coils provide increased airflow, support and durability. Sealy® Dreamlife™ is dedicated to promoting a healthier sleep environment. CertiPUR-US® ensures the mattress foam meets strict standards for content, emissions and durability, and Surface-Guard Technology™ kills bacteria on the surface of the mattress, protecting it from common allergens. This mattress was designed and built in the USA and includes a 10-year limited warranty, so you can rest easy with comfort you can count on.

Brand: Sealy


Size: King


Product Dimensions: 80"L x 76"W x 12"Th


Top Style: Gel Top


Cover Material: Polyester


Number of Layers: 3


Fill Material: Gel Memory Foam


Special Feature: Pressure Relief


Color: Dreamlife


Coil Type: Encased Coil


Product Dimensions: 80 x 76 x 12 inches


Item Weight: 101 pounds


Manufacturer: Sealy


Item model number: F03-00240-KG0


Refill: Gel Memory Foam


Care instructions: Spot clean only - wipe area with a light damp sponge or vacuum with a soft brush attachment to remove particles.


Assembly required: No


Batteries required: No


Included Components: Mattress


Age Range Description: Adult


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 18 – Oct 19

Yes, absolutely! You may return this product for a full refund within 100 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great mattress.
Style: 14" Size: King
This is a really comfortable bed at a very attractive price point. It has good support. I get a great night’s sleep on it. Not hot like my old tempurpedic mattress Pay for the in the room delivery as they take away the old mattress and it was effortless. This is comparable to $1400 mattresses at your local store. ... show more
Reviewed in the United States on July 16, 2025 by Ricknovak1963

  • Very supportive mattress
Style: 12" Size: California King
The mattress is very heavy, 110 pounds. I think it is a firm mattress. We've been sleeping on foam mattresses for years, I like the springs in the mattress. It feels more supportive and like it will last longer. If you are looking for a bed you will sink into when you lay down, this is not the bed. But in the morning you will feel much better than you have been when you get up. ... show more
Reviewed in the United States on May 29, 2025 by Amazon Customer

  • Good night
Style: 12" Size: Queen
Very comfortable, but really heavy! A very good buy for the money.
Reviewed in the United States on September 14, 2025 by NLH

  • It's ok
Style: 14" Size: King
It's ok. Super plush and you do sink. It's comfortable but I wish we would have purchased a firmer mattress.
Reviewed in the United States on July 10, 2025 by Aly

  • PERFECT!
Style: 12" Size: King
This mattress is awesome. After trying one out in the mattress store and not wanting to pay 1300.00, I found it here. Husband and I are very very picky and was skeptical about a hybrid after having a pillow top for 20 plus years. But we do not regret buying this at all. It’s not super soft, but not too hard. We wake up with NO back or leg pain anymore. I would give 10 stars if I could. ... show more
Reviewed in the United States on May 4, 2025 by Pam Williams

  • Happy for cost
Style: 14" Size: King
Perfect mix of comfort and price. Easy to unwrap with 2 people. Then cut open the packaging an it self inflates. The King is really a king. But simple to set up. Quality is spot on and love it in a king size. Second night on this mattress and holy mother of heat! I wake up every hour covered in sweat. Wouldn't recommend for people who sleep hot. ... show more
Reviewed in the United States on March 19, 2025 by Mark Frank

  • This is the one!!!
Style: 14" Size: Queen
This is the first product review I have ever written. I went through several mattresses over a six-month period trying to find one that didn't leave me sore as hell in the morning. I kept throwing money at the problem and was getting nowhere. Honestly, I was starting to think it was me and not the mattresses. On a whim, I took another swing and bought this mattress, and I'm sooo thankful I did. The mattress is heavy, but that really only matters when first getting it on your frame. (I use an adjustable frame...BTW) It's only been a week, but I think this is the most comfortable mattress i've ever had and it was only a fraction of the cost compared to others I've tried. ... show more
Reviewed in the United States on August 3, 2025 by Ryan Lee

  • It's a good mattress
Style: 14" Size: Queen
Overall I like this new mattress. We purchased it because it is certified to contain safe materials and it's soft top (foam) mattresses are good for side and back sleepers and the lower coils provide structure to prevent the mattress from sinking. Our mattress sits on a boxspring mattress which sits on a bed frame so the mattress top is almost 3 ft above the ground and the edges roll / sink downward when I first get on the bed and in a sitting position with my legs hanging off. Otherwise, I like this mattress a lot. ... show more
Reviewed in the United States on August 22, 2025 by Peggy

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