12 Inch King Size Mattress, Coolvie Hybrid King Mattress in a Box, 3 Layer Premium Foam with Pocket Springs for Motion Isolation

(10 customer reviews)


Size King
Item Firmness Description Medium
Brand Coolvie
Product Dimensions 80″L x 76″W x 12″Th
Color White, Blue
Age Range (Description) Adult
Construction Type Hybrid
  • 【Motion Isolation for a Peaceful Undisturbed Sleep】The individual innerspring pocket coils in this king mattress work independently, you don’t have to worry about waking up your sleeping partner every time you climb into or out of bed or change position. Pocket coils are separated by the isolated fabrics and there is little feel of coils underneath.
  • 【Ergonomic Support and Pressure Relief】 Coolvie’s innovative 5-zone spring support systems are designed to work in perfect harmony with foams to ensure a balanced, refreshed sleep with less tossing and turning and minimal partner disturbance. Independent pocketed Spring design ensures that your body weight is evenly absorbed and distributed comprehensively from head to toe throughout the mattress. Also provides the targeted support to your body, proper back support & alignment.
  • 【Stay Cool with Whole Night】 This 12 inch king size mattress is designed with 3D soft knit fabric on the top cover which is breathable and skin-friendly, absorbing moisture and balancing body temperature. The open cell high density foam under the cover promotes air flow when sleeping on this mattress. You don’t need to worry about overheating.
  • 【Convenient Shipping & Easy to Set Up】This 12 inch hybrid king size mattress is compressed, rolled, vacuum sealed in a box, conveniently delivered to your door and easy set-up. Please kindly wait for 48-72 hours to fully expand, for any potential odors to dissipate. It fits all kinds of King size bed frames such as box Spring, floor, slatted base, flat platform.
  • 【Warranty】You will get 100 nights trial and 10 years support for this king bed mattress. If for any reason you are unsatisfied, contact us at any time for support.


Product Description





Additional information

Weight 103.8 lbs
Dimensions 80 × 76 × 12 in
Product Dimensions

80 x 76 x 12 inches

Item Weight

103.8 pounds



Date First Available

December 14 2021



10 reviews for 12 Inch King Size Mattress, Coolvie Hybrid King Mattress in a Box, 3 Layer Premium Foam with Pocket Springs for Motion Isolation

  1. Phyllis

    Really nice mattress…quite firmThe mattress was delivered quickly. We opened it up and let it expand for the required 72 hours before sleeping on it. It is a very firm mattress, and very attractive too. Bynthat I meanmthe seams were well made, the fabric alignment was correct etc.Now, on a scale of 1 to 10 in firmness, I would give it an 8. It’s not rock hard, but it’s also not very soft.I went to bed the first night with a backache and by morning the backache was GONE. I was super impressed by that fact. I’ve only been sleeping on this mattress for a couple of weeks, but I no longer have a backache when I wake up ~ and I think I am sleeping better since I don’t seem to be overheating during the night.I would recommend this mattress (and I would buy another one)…if you like a firm sleeping area.We placed it in our old waterbed platform/frame so it sits down inside the frame a bit. But a flat platform would work just as well. I’m very happy with my new mattress and I think 5 stars all the way is appropriate.

  2. Nadine C

    Awesome mattress for the price.It arrived nicely rolled in a heavy duty box. The mattress was securely encased in plastic for protection and was very flat. It was soo cool to watch this rise to its full height when the plastic wrap was punctured. Very easy! I left it for 3 days in my spare room. No smell, a full 12 inches high and very comfortable. There is no noise when laying and moving around. I did put another topper on it for protection so I’m not sure if it is actually a cooling top. I can say I fell asleep and stayed asleep which is rare for me. I can’t say it relieves pain because I don’t have any per say, but it is medium in firmness in my opinion. You don’t sink into it, it just feels the right amount of firm to me. Very nice quality too. Looks nice! Can’t go wrong for the price. Beats spending a ton of money if you need something comfy.

  3. Amazon Customer

    Mattress instead of a futonI was looking for a comfortable futon for more room in my bedroom due to cancer there’s a lot of clothes that I have a carder chest to put them in but I need a comfortable futon with a comfortable mattress with storage under as well to make more room

  4. Dee Griffiths

    Solid mattressGreat mattress but never did get to 12 inches. Stopped at 11 inches for me and I let it sit for about a week prior to use (says to give it 72 hrs to fully decompress). But overall solid mattress and would recommend.

  5. mom of 3

    Deluxe Comfort on a BudgetVery impressed with the quality and comfort of the mattress. Be sure to let it rest for 3 days once you remove it from the packaging, so it can optimally expand. No odors and the mattress itself looks well constructed. My teenage son says it’s very comfortable, and he knows about sleep!

  6. Scott W

    Incredible mattressWow. Where to start? Great value, no need to pay $1000 plus. Super fast free delivery. Took 2 days. Ease of setup. I Carefully cut the vacuumed plastic and immediately shapes up. I bought the king size. Slept on it same night with only about 8 to 10 hrs to reach it’s full shape. The most comfortable sleep in years. I was skeptical buying a mattress online but so glad I did. Truly incredible in every way.

  7. Subq

    Very comfortable and made my pain go away! Form but comfortable!Form but very comfortable. My discomfort from old mattress went away on the first night! I plan on getting one for my husband. Delivery was great and fast and mattress was fun to watch puff up. No smell whatsoever! Great buy too!

  8. Tennesha Harrington

    I love it! Let it sit for More than the 72 hours recommended, and YOU will also!!!!!When I originally set this mattress up and waited the 72 hours recommended before sleeping on it, I thought I had made a horrible mistake because the mattress was too soft and caused my back to hurt, however I went on vacation 2 days later and I was gone for 7 days. Let me tell you that was a game changer. I have slept like a baby. The mattress is nice and firm with the right amount of support. I think they should advise a longer period of time for the mattress to firm up and they would have fewer negative complaints about how soft people found the mattress. It is definitely worth the expense. I am not sure about how the temperature control works because I have a mattress pad on it as that is a habit I have whenever I purchase a new mattress as a protection for bugs as you never know what goes on in the manufacturing or staring process and I DON’T DO BUGS, so better safe than sorry is my motto.

  9. Militarypolice52

    EXCELLENT MATTRESS IN EVERY WAY!!!I unboxed the mattress on a Saturday afternoon and I actually slept on it that night.After it was unboxed I put it on the bed and opened the plastic wrapper and it immediately inflated…stand back cause this baby is airborne!!! LOL 😆!!!Anyway…after it inflated I actually laid on the bed itself and I was amazed at how comfortable it was.I waited about 8 hours to make the bed and when I went to bed that evening 😴 I have to say I had the most incredible night’s sleep in a long ⌛️ time!!!I have Scoliosis in my lower back and the pain sometimes is truly unbearable 😫.I’ve had the pleasure of sleeping on this bed now for over a week and I’m extremely satisfied and happy with this purchase!!!Thanks to the Coolvie company for making a quality product 👌 ✨️ and for a King 🤴 size bed…”Amazingly Awesome “!!!Look No further than this mattress because you will not be disappointed!!!

  10. Jason & Stefanie

    Expands so fast!The media could not be loaded.

     Wow! Because it was vacuum sealed and mentioned letting it sit and expand for three days, I was expecting in to be a little flat at first. Not at all! At soon as I started cutting the plastic its bounced back to 5 times the size. In retrospect I probably should have laid on the kids bed first but we lucked out fitting it through the door part of the bed. We had a thinner memory foam mattress before this and it didn’t provide enough even support on the beams like this one does. The 12 inches provides a good frame/ springs for bounce and a thick pillow top mattress on top of layers of foam. Almost immediately it felt thick and bouncey- you can see my three year old bouncing on it right away. Super impressed with the quality for the price. Also no unpleasant smells or anything of that sort

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