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Sealy

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

    • Based on 1,428 reviews
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Availability: Only 7 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, May 13
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Color: Dreamlife


Size: King


Pattern Name: 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


Product Dimensions: 80 x 76 x 12 inches


Item Weight: 101 pounds


Manufacturer: Sealy


Country of Origin: USA


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.


Batteries required: No


Included Components: Mattress


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 13

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.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Deep Relaxation In A Box
Color: Dreamlife Size: Queen Pattern Name: 14"
I was initially quite hesitant about selecting a gel memory foam mattress, especially since I'd never slept on one before and wasn't aware there were different thickness options. However, when my Queen Size 14" thick mattress arrived, I was immediately impressed by its color and texture. Despite concerns from some reviews about the expansion process, I found it remarkably comfortable even after just a short time, especially compared to the uncomfortable bed at my temporary rental and the damaged mattress it replaced. The first night on it, I just lay down without a box spring on the assembled bed frame, and my body was the most relaxed it had ever been, leading to a deeply restful and restorative sleep that left me feeling both physically and mentally refreshed. ... show more
Reviewed in the United States on March 29, 2025 by anthro.student
    • A perfect selection!
Color: Dreamlife Size: California King Pattern Name: 12"
The mattress is outstanding! Extremely comfortable. The various layers create a reasonably firm but plush feeling. Highly recommended!
Reviewed in the United States on March 22, 2025 by The Observer
    • Sleep like a baby!
Color: Dreamlife Size: Queen Pattern Name: 12"
This was purchased for a hunting cabin. Didn't want to spend a lot of money and hoped for the best. The mattress is amazing. We slept like babies!!
Reviewed in the United States on March 3, 2025 by Megpooch
    • It’s color I like
Color: White Size: Full Pattern Name: 10"
There is smell, but after I put it under sunshine And many days later, the smell lost I feel the price is low, so if you want buy economy one, this is very good choice
Reviewed in the United States on September 25, 2024 by Johnson
    • Looking for a firm yet soft mattress, this is for you!
Color: White Size: Twin XL Pattern Name: 10"
We purchased this mattress after looking for a month or so and reading multiple reviews. We had a comfort air adjustable bed, one side kept loosing air and we could never find the reason. We decided to try the mattress in the box. The reviews on this were good, no complaints of odor and many people said it was soft, yet firm, I couldn't understand that one, but he wanted a firm mattress. I received the mattress in two days, it was easy to set up by myself. I took it out of the box, carefully cut the wrapped plastic, then I was able to roll it out onto the platform of our adjustable base. Once I started to cut the sealed plastic, I could hear the air and saw the mattress starting to rise, once I got all that plastic off, the mattress continued to rise and it took about 15 minutes. I decided to try it out and see if it was soft, yet firm, to my surprise it was! I tried to explain this to my husband and he couldn't understand what I was even talking about. When you lay down, it feels soft, but you don't sink in, it stays firm! When my husband got home from work, he laid on it and said the same thing, he couldn't understand my explanation until he tried it. He is a back sleeper and he hardly moves at all the whole time he is sleeping. It's been a few weeks now and he is very happy with it. It has a memory type foam on top, but spring coils on the bottom. It has a zippered cover around it as well. I haven't tried to wash that yet, so I'm not sure how hard/easy this will be when the time comes. You also get 120 nights to try it out, if you aren't happy you can send it back, it doesn't look like we will be doing that though! ... show more
Reviewed in the United States on September 17, 2019 by Specialk
    • Mattress had multiple defects from the factory, or something.
Color: White Size: Queen Pattern Name: 12"
Review Image by DrumrPete DrumrPete
Review Image by DrumrPete DrumrPete
Review Image by DrumrPete DrumrPete
Review Image by DrumrPete DrumrPete
Review Image by DrumrPete DrumrPete
Review Image by DrumrPete DrumrPete
Review Image by DrumrPete DrumrPete
I had seen a few Hybrid Bed-in-a-box Sealy mattresses at friends and family houses. Also had tried them at local retail stores, they looked and felt very nice Though no instructions came with the Sealy, I had seen videos on how to let them "expand" to size. I gave this mattress more than the recommended 3 days, but it's expansion never progressed more than it did the first day. I kept it on the floor in the most temperature controlled room in the house. Problems: 1. Mattress's (3 layer) foam top was off-centered, hung over 2" along the right side, was shy of bed edge by 2" on the left. Issue on the right made it hard getting up or using as a seat, as the edge would sink. On the left side, there was no padding for the 2" along the side, you felt the springs. 2. ALL FOUR CORNERS failed to expand to full (12") HEIGHT, all corners appeared smashed down to 10-1/2". 3. Bottom rim pads slipped off center as well, no issue really, just looked like a bad assembly job. 4. Head and foot of mattress measured 10-1/2", not full 12". We could no longer sit up in our bed to read, as the mattress was too low for headboard curves. 5. Hump across the middle of bed from side-to-side was 13". So, in effect our heads and feet were below our middle sections when laying on bed. We both began to experience vertigo issues soon after rising from bed in the a.m. This wasn't going to work. I tried getting "CallBack" help at Amazon via the RETURN page. Tried 5 times, never did get a callback, although I got emails asking if problem was solved. (Yes or No) So then I called Sealy direct, knowing there was no way to send this back. I was told they do not deal with Amazon sale issues. The helpful agent there, gave me a number for "Sealy Emerging Channel" to swap it out. SEC said they could do nothing for me either, said I'd have to go back to Amazon help. Days later, after not getting comfortable with the bed, I finally accepted the "chat" option at Amazon, and actually got a helpful agent. He heard my story and solved the issue with a "one-time credit". I will only have to pay for someone to dispose of it. Once again, Amazon came thru, Thank you! Here's pictures: ... show more
Reviewed in the United States on March 8, 2024 by DrumrPete DrumrPete

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