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  • 10-Year Accidental Stain Protection for your new mattress.
  • Includes a breathable BedGard Mattress protector made with cotton blended terry.
  • Sure Fit construction for mattresses up to 18” deep.
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BedGard 10-Year Mattress Protection King (B)

from UNITERS
  • 10-Year Accidental Stain Protection for your new mattress.
  • Includes a breathable BedGard Mattress protector made with cotton blended terry.
  • Sure Fit construction for mattresses up to 18” deep.
  • 24/7 online Warranty Service.
  • See terms and conditions for complete details.

5-Year Indoor Furniture Accident Protection Plan

from Allstate Protection Plans
  • Plan starts on the date of purchase. Product damages from accidents, stains, rips, and tears are covered from day one. Product breakdowns and malfunctions are covered after manufacturer's warranty.
  • No additional costs for repairs - parts, labor, and shipping are all included. Easy claims process - file a claim anytime 24/7 via mobile app, online, or phone.
  • Cancel anytime, full refund in the first 30 days. Transferable with gifts

3-Year Indoor Furniture Accident Protection Plan

from Allstate Protection Plans
  • Plan starts on the date of purchase. Product damages from accidents, stains, rips, and tears are covered from day one. Product breakdowns and malfunctions are covered after manufacturer's warranty.
  • No additional costs for repairs - parts, labor, and shipping are all included. Easy claims process - file a claim anytime 24/7 via mobile app, online, or phone.
  • Cancel anytime, full refund in the first 30 days. Transferable with gifts
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Sleep Innovations Marley Cooling Gel Memory Foam Mattress, 12 Inches, King

4.5 out of 5 stars 7,404 ratings

$587.49
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Color: White
Size: King
King
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Style: 12 Inches
12 Inches
Updated other options based on this selection

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About this item

  • King Size Cooling Memory Foam Mattress: This 12 inch cooling gel memory foam mattress is perfect for hot sleepers; The gel memory foam top layer and supportive center combine to relieve pressure
  • Cooling Comfort: Available in medium and medium firm options, the Marley mattress features a triple layer design with airflow channels in the supportive middle layer to maintain a comfortable climate all night
  • Support For Every Sleeper: Whether you are a side sleeper or feel best on your stomach or back, looking for motion isolation, edge support, and/or breathability, we have an eco conscious mattress for you
  • Quality First: The Marley mattress is made in the USA and Mexico. Our memory foam mattresses, mattress toppers, and pillows are all hypoallergenic and CertiPUR-US certified, offering you high quality materials for high quality sleep
  • Committed To Great Sleep: We invented the memory foam mattress in a box and we continue to innovate restorative foams and fabrics to give you the best night's sleep; This mattress comes with a 10 year warranty
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  • Sleep Innovations Marley Cooling Gel Memory Foam Mattress, 12 Inches, King
  • +
  • Amazon Basics Foldable, 14" Black Metal Platform Bed Frame with Tool-Free Assembly, No Box Spring Needed - Twin XL
  • +
  • SafeRest Mattress Protector – King, Premium, Cotton, Waterproof Mattress Cover Protectors – White
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From the manufacturer

Marley 12"
Sleep Innovations
Sleep Innovations
Marley Gel Memory Foam Mattress Marley Gel Memory Foam Mattress Ellis Advanced Cooling Gel Memory Foam Mattress Shiloh Memory Foam Mattress Hudson
Marley Gel Memory Foam Mattress Quinn Antimicrobial Gel Memory Foam Mattress Ellis Advanced Cooling Gel Memory Foam Mattress Shiloh Memory Foam Mattress Hudson Hybrid Innerspring & Gel Memory Foam Mattress
Height options 8”, 10”, 12” 10”, 12” 12” 12”, 14” 10”, 12”
Comfort Cool comfort at a great value Antimicrobial protection and cooling Advanced all night-cooling comfort Cloudlike comfort with airflow Hybrid combo of innerspring and gel memory foam
Pressure relief
Cooling Cooling gel memory foam; Air channel foam for breathability Cooling gel memory foam; Air channel foam for breathability; Cool quilted cover Premium EVENcor GelPlus memory foam for maximum cooling; Air channel foam for breathability; Dual cool cover with instant and all-night cooling fibers Ventilated Suretemp memory foam for breathability Advanced cooling gel memory foam with enhanced breathability; Cool to touch quilted cover
Support Responsive support foam; Sturdy base foam for stability Responsive support foam; Sturdy base foam for stability Reliable support with consistent-feeling, EVENcor GelPlus memory foam; Sturdy base foam for stability Reliable support with consistent- feeling, Suretemp memory foam; Sturdy base foam for stability Hybrid design with advanced pocketed coil support system; Extra resilient foam for uplifting back support; Reinforced base foam with edge support
For all sleep positions

Product Description

The triple layer design of 12" Marley mattress in a box keeps you cool and offers medium firm support. The gel memory foam top layer and supportive middle layer with airflow channels provide a cooling effect, helping to maintain a comfortable climate while you sleep. Includes hypoallergenic cover.

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Sleep Innovations Marley Cooling Gel Memory Foam Mattress, 12 Inches, King
Amazon Basics Cooling Gel-Infused, Medium-Firm Memory Foam Mattress, CertiPUR-US Certified - King Size, 10 Inch
Novilla King Size Mattress, 12 inch Gel Memory Foam King Mattress for a Cool Sleep & Pressure Relief, Medium Firm Feel with Motion Isolating, Bliss
Vibe Gel Memory Foam 12-Inch Mattress | CertiPUR-US Certified | Bed-in-a-Box, King
Signature Design by Ashley Chime 12 Inch Medium Firm Memory Foam Mattress, CertiPUR-US Certified, King
Customer Rating 4.5 out of 5 stars (7404) 4.5 out of 5 stars (2607) 4.5 out of 5 stars (13896) 4.6 out of 5 stars (42108) 4.6 out of 5 stars (39766)
Price $587.49 $336.27 $395.93 $404.40 $380.37
Shipping FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details
Sold By Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com
Construction Type Memory Foam Foam Foam Construction Memory Foam Memory Foam
Item Dimensions 80 x 76 x 12 inches 80 x 76 x 10 inches 80 x 76 x 12 inches 80 x 76 x 12 inches 74 x 75 x 12 inches
Item Firmness Description Medium Medium Medium Medium Plush
Item Weight 84.40 lbs 70.30 lbs 57.98 lbs 77.00 lbs
Material Foam Gel Foam Memory Foam Memory Foam Foam
Size King King King King King

Customer Questions & Answers

Customer reviews

4.5 out of 5 stars
4.5 out of 5
7,404 global ratings

Top reviews from the United States

Reviewed in the United States on May 6, 2018
Color: WhiteSize: KingStyle: 12 InchesVerified Purchase
1,381 people found this helpful
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Reviewed in the United States on November 16, 2020
Color: WhiteSize: KingStyle: 12 InchesVerified Purchase
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5.0 out of 5 stars 8-10 year lifespan: Our best Amazon purchase ever! Great mattress. See UPDATES and pictures:
By James C. on November 16, 2020
ORIGINAL REVIEW 2013: I held off on writing this review until my wife and I slept on this bed for one entire year.
After toiling for months over which mattress to invest in we decided on this one. First off the mattress was very reasonably priced; the king sized we bought was less expensive than the Sealy innerspring mattress we were replacing (after eleven years) by ~$500. Regardless of the price, this mattress was a great choice. The delivery took several days and came in a vacuum sealed bag. After I brought it up my stairs I placed it on the 7.5” tall box spring (which has 3” support slats) and unwrapped it. I would suggest not breaking the vacuum seal until the mattress is in place because it expands quickly and can be difficult to move once it is expanded. Also be sure that the mattress is facing the right side up. After a few minutes the mattress was at about 90% thickness, after several hours it was fully expanded. We left the window open in our bedroom for the afternoon to let the chemical smell dissipate. When bedtime came the bed was sufficiently aired out and the chemical smell was noticeable only if you really jammed your nose into the mattress. As an aside, my wife and I were prepared to sleep in a spare bedroom if the smell was still too much but we encountered no such problem.
Now for the good parts; standard sheet sets fit perfectly on this mattress and laying on the bed was extremely comfortable (analogous to the TempurPedic we tested while buying a different mattress for one of our kids). The memory foam feel is quite different in a good way; supportive but not overly firm. When I was researching memory foam mattresses I got quite confused by the fact that one reviewer would say too firm and the next would say too soft - while referring to the same mattress. After sleeping on the mattress I could rate sleep quality this way: the memory foam becomes very tailored to your body, it feels firm at first but as the foam compresses it supports your body weight in just the right places. The softness feel comes as you sleep on it, it stays soft and comfortable (and at the same time supportive) without feeling like you are sinking into quicksand. It is really great.
After sleeping on it for one year and four seasons, I can say that the mattress is still as comfortable as day one. I am a 230lb oaf and my wife is very petite yet we both love the feel of this mattress. There is no warping or hammock-ing of the foam where either of us sleep. Yes, it is a tad warmer in the summer but nothing too drastic.
All-in-all this Sleep Innovations mattress is a terrific mattress and an excellent buy. The 12” height is plenty thick and does not make you feel like you have to jump up to get into it like the 14” did. After sleeping on an otherwise high quality spring bed while on vacation, my wife and I both commented on how we could never go back to a non-memory foam mattress again. This was our favorite Amazon purchase EVER and I highly recommend this mattress.
Despite my superlatives, keep in mind that what makes a mattress good is a very subjective thing; what is comfortable to me may not be for you - so I attempted to describe this mattress' attributes as best as I could. Hopefully this review helps you decide if it will be a good choice for you. I attached a few pictures for reference.

UPDATE 5/1/2015: This bed is still comfortable and it is holding up very well. The foam still compresses and releases as when new and there has been no lumping or hammock-ing. A few months ago I did rotate it 180 degrees to shift the areas that are laid upon as that was recommended to us by other several reviewers (thanks to them!).
Still give a full five stars as my wife and I love this bed.

UPDATE 11/16/2020: After a bit less than nine years, my side of the bed started to get a little lumpy, presumably from uneven recoiling of the foam after I get up. We loved this bed so much that we ordered an identical one to replace it and the new one seems just as good thus far.
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597 people found this helpful
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Reviewed in the United States on June 19, 2021
Color: WhiteSize: FullStyle: 10 InchesVerified Purchase
174 people found this helpful
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Top reviews from other countries

Ken W
4.0 out of 5 stars Comfortable and Great Value
Reviewed in Canada on July 28, 2019
Color: WhiteSize: QueenStyle: 10 InchesVerified Purchase
One person found this helpful
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NR
3.0 out of 5 stars mattress is quite good
Reviewed in Canada on February 17, 2019
Color: WhiteSize: QueenStyle: 10 InchesVerified Purchase
One person found this helpful
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Dylan Austin
5.0 out of 5 stars Absolute bargain for the performance!
Reviewed in Canada on January 26, 2020
Color: WhiteSize: QueenStyle: 10 InchesVerified Purchase
Glenn
5.0 out of 5 stars Great option if you want a firm mattress
Reviewed in Canada on May 24, 2019
Color: WhiteSize: QueenStyle: 10 InchesVerified Purchase
jakmack
5.0 out of 5 stars Bought a twin on sale for $135 best money I ever spent
Reviewed in Canada on January 23, 2018
Color: WhiteSize: TwinStyle: 10 InchesVerified Purchase