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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 49 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Jul 23
Order within 17 hours and 37 minutes
Available payment plans shown during checkout

Color: Dreamlife


Size: King


Style: 12"


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


Item Weight: ‎101 pounds


Product Dimensions: ‎80 x 76 x 12 inches


Country of Origin: ‎USA


Item model number: ‎F03-00240-KG0


Date First Available: June 25, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 23

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


  • Nice bed!
Color: Dreamlife Size: Queen Style: 12"
I ordered a queen. Came in a box. Opened up and let it set up for 2 days. This bed is a little heavy. Need 2 people to pick it up. The memory foam top is soft but not too soft. Its about 4 inches thick.The coils underneath give it good support. I am a side sleeper. Overall its a decent bed!
Reviewed in the United States on June 2, 2025 by Chris Selle

  • PERFECT!
Color: Dreamlife Size: King Style: 12"
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
Color: Dreamlife Size: King Style: 14"
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

  • Too soft:
Color: Dreamlife Size: Queen Style: 14"
This mattress is nice and comfy but does the support needed for to sleep on it!
Reviewed in the United States on May 15, 2025 by Michelle Lauenstein

  • Good value
Color: Dreamlife Size: Queen Style: 14"
Soft, comfy, great price. You need a firm pillow to compliment soft mattress.
Reviewed in the United States on May 11, 2025 by Jonathan

  • Great mattress.
Color: Dreamlife Size: King Style: 14"
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

  • Poor quality and uncomfortable
Color: Dreamlife Size: King Style: 14"
Worst mattress that i have ever bought
Reviewed in the United States on March 19, 2025 by Travis V

  • It's ok
Color: Dreamlife Size: King Style: 14"
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

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