KOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, Medium
KOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, Medium
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KOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, Medium

4.3 stars out of 3283 reviews
(4.3)|
3,283 ratings
KOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, MediumKOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box MediumCalifornia King Mattress KOW 14 inch California King Size Hybrid Mattress in a Box MediumTwin XL Mattress KOW 14 inch Hybrid Mattress in a Box MediumKOW Mattress 12 inch King Size Gel Memory Foam Hybrid Mattress in a Box Cozy Sleep AdultKOW Mattress 14 inch Full Size Memory Foam Hybrid Mattress in a Box PlushTwin Mattress KOW 14 inch Twin Size Memory Foam Hybrid Mattress in a Box MediumKOW Mattress 12 inch Queen Size Memory Foam Hybrid Mattress in a Box Plush FirmnessKOW Mattress Twin Size 12 inch Memory Foam Hybrid Mattress in a Box CertiPUR USKOW Queen Mattress 14 inch Queen Size Memory Foam Hybrid Mattress in a Box MediumKing Mattress KOW 14 inch King Size Memory Foam Hybrid Mattress in a Box MediumKOW Mattress Queen 12 inch Hybrid Mattress in a Box Upgrade 7 Zone SupportQueen Mattress KOW 14 inch Queen Size Memory Foam Hybrid Mattress in a Box PlushKOW Mattress 12 inch Full Size Gel Memory Foam Hybrid Mattress in a Box Cozy SleepKOW Mattress 12 inch Twin XL Size Memory Foam Hybrid Mattress in a Box Medium FirmKOW Mattress 14 inch Full Size Gel Memory Foam Hybrid Mattress in a Box Medium
Bed Size:California King
Mattress Thickness:12 in
Mattress Comfort Level:Medium

Key item features

  • CertiPUR-US Certified: CertiPUR-US certified mattress made with skin-friendly materials, free from harmful substances like formaldehyde, fiberglass, and heavy metals.
  • Breathable Construction: Designed with a breathable construction to ensure a comfortable and cool sleeping environment.
  • Adjustable Base Compatible: Compatible with adjustable bases for versatile use and enhanced comfort.
  • Enhanced Edge Support: Reinforced edge support for stability and durability, suitable for adult use.
  • Low Motion Transfer: Features low motion transfer to minimize disturbances from a partner's movements during sleep.
  • Convenient Packaging: Mattress compressed, rolled, and shipped in a box for easy setup and transportation through narrow spaces.
  • 7-Zone Support: Equipped with hundreds of pocket springs providing 7-zone targeted support for ergonomic alignment and all-night comfort.
  • Medium Soft Comfort: 12-inch California King size memory foam hybrid mattress with a medium soft feel for optimal body support and comfort.
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Current price is Now $239.99
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was $489.99
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Columbus, 43215
Arrives by Mon, Feb 2
Sold by Koala FurniturePro Seller
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4.3795966785290625 stars out of 5, based on 843 seller reviews(4.4)
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Comparison Chart:
Mattress Top TypePillow TopKOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, MediumEuro TopMocangtu 12" Queen Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep SupportEuro TopSEEUO Queen Mattress,12 inch Hybrid Mattress in a Box with Memory Foam & Individual Pocket Spring for Edge Support,Pressure Relief,Medium Firm,CertiPUR-USEuro TopSailvan Queen Mattress 12 inch,Purple Queen Size Mattress in a Box,Cooling Gel Infused Memory Foam and Pocket Hybrid Spring Mattress,Medium Firm,Pressure Relief,CertiPUR-USEuro TopSailvan 12-Inch Queen Size Mattress in a Box, Hybrid Medium-Firm Support Mattress with Cooling Gel Memory Foam,Motion Isolation, CertiPUR-US Certification,and Pressure ReliefEuro TopYilicy 12 inch Queen Mattress in a Box, Spring Hybrid Memory Foam Medium Firm Mattress,AdultEuro Top10 Inch Foam and Spring Hybrid Mattress, Full Size, Medium Firm, Durable Support, Mattress in BoxEuro TopGREOO Queen Size Mattress in a Box 12" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-USEuro TopWhite with Black Rim Mattress, 12 Inch Euro Top Mattress in a Box,Queen, Memory Foam Hybrid Mattress with individually Pocket Springs,MedEuro TopCICIMLU 12 inch Queen Mattress ,Hybrid Mattresses Medium Firm in a Box
Mattress TypeHybrid MattressesKOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, MediumHybrid MattressesMocangtu 12" Queen Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep SupportHybrid MattressesSEEUO Queen Mattress,12 inch Hybrid Mattress in a Box with Memory Foam & Individual Pocket Spring for Edge Support,Pressure Relief,Medium Firm,CertiPUR-USHybrid MattressesSailvan Queen Mattress 12 inch,Purple Queen Size Mattress in a Box,Cooling Gel Infused Memory Foam and Pocket Hybrid Spring Mattress,Medium Firm,Pressure Relief,CertiPUR-USHybrid MattressesSailvan 12-Inch Queen Size Mattress in a Box, Hybrid Medium-Firm Support Mattress with Cooling Gel Memory Foam,Motion Isolation, CertiPUR-US Certification,and Pressure ReliefMemory Foam MattressesYilicy 12 inch Queen Mattress in a Box, Spring Hybrid Memory Foam Medium Firm Mattress,AdultHybrid Mattresses10 Inch Foam and Spring Hybrid Mattress, Full Size, Medium Firm, Durable Support, Mattress in BoxHybrid MattressesGREOO Queen Size Mattress in a Box 12" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-USHybrid MattressesWhite with Black Rim Mattress, 12 Inch Euro Top Mattress in a Box,Queen, Memory Foam Hybrid Mattress with individually Pocket Springs,MedHybrid MattressesCICIMLU 12 inch Queen Mattress ,Hybrid Mattresses Medium Firm in a Box
Mattress Comfort LevelMediumKOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, MediumMediumMocangtu 12" Queen Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep SupportMediumSEEUO Queen Mattress,12 inch Hybrid Mattress in a Box with Memory Foam & Individual Pocket Spring for Edge Support,Pressure Relief,Medium Firm,CertiPUR-USMediumSailvan Queen Mattress 12 inch,Purple Queen Size Mattress in a Box,Cooling Gel Infused Memory Foam and Pocket Hybrid Spring Mattress,Medium Firm,Pressure Relief,CertiPUR-USMediumSailvan 12-Inch Queen Size Mattress in a Box, Hybrid Medium-Firm Support Mattress with Cooling Gel Memory Foam,Motion Isolation, CertiPUR-US Certification,and Pressure ReliefMediumYilicy 12 inch Queen Mattress in a Box, Spring Hybrid Memory Foam Medium Firm Mattress,AdultMedium10 Inch Foam and Spring Hybrid Mattress, Full Size, Medium Firm, Durable Support, Mattress in BoxFirmGREOO Queen Size Mattress in a Box 12" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-USMediumWhite with Black Rim Mattress, 12 Inch Euro Top Mattress in a Box,Queen, Memory Foam Hybrid Mattress with individually Pocket Springs,MedMediumCICIMLU 12 inch Queen Mattress ,Hybrid Mattresses Medium Firm in a Box
FeaturesMattress-in-a-BoxKOW Mattress California King Size 12 inch Memory Foam Hybrid Mattress in a Box, MediumMattress-in-a-BoxMocangtu 12" Queen Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep SupportMattress-in-a-BoxSEEUO Queen Mattress,12 inch Hybrid Mattress in a Box with Memory Foam & Individual Pocket Spring for Edge Support,Pressure Relief,Medium Firm,CertiPUR-USMattress-in-a-BoxSailvan Queen Mattress 12 inch,Purple Queen Size Mattress in a Box,Cooling Gel Infused Memory Foam and Pocket Hybrid Spring Mattress,Medium Firm,Pressure Relief,CertiPUR-USBreathable ConstructionSailvan 12-Inch Queen Size Mattress in a Box, Hybrid Medium-Firm Support Mattress with Cooling Gel Memory Foam,Motion Isolation, CertiPUR-US Certification,and Pressure ReliefMattress-in-a-BoxYilicy 12 inch Queen Mattress in a Box, Spring Hybrid Memory Foam Medium Firm Mattress,AdultMattress-in-a-Box10 Inch Foam and Spring Hybrid Mattress, Full Size, Medium Firm, Durable Support, Mattress in BoxMattress-in-a-BoxGREOO Queen Size Mattress in a Box 12" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-USMattress-in-a-BoxWhite with Black Rim Mattress, 12 Inch Euro Top Mattress in a Box,Queen, Memory Foam Hybrid Mattress with individually Pocket Springs,MedMattress-in-a-BoxCICIMLU 12 inch Queen Mattress ,Hybrid Mattresses Medium Firm in a Box
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Items may be delivered on different dates

Customer ratings & reviews

4.3 out of 5 stars
stars3,283 ratings843 reviews
How item rating is calculated
  1. 5 stars73% (2,387)
  2. 4 stars10% (318)
  3. 3 stars4% (146)
  4. 2 stars3% (107)
  5. 1 star10% (325)

Reviews summary

Pros
  • : Offers great value at this cost.
  • : Offers great support and comfort during rest.
  • : Made with comfortable and durable components.
  • : Mattress sinks 4-6 inches when laid upon.
Neutral
  • : Offers stability for some users, but can be inconsistent in edge support.
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Customer images

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Showing 1-3 of 843 reviews

Jul 30, 2025
anonymous
Item details
Bed size: Twin-XL
Mattress thickness: 12 in
Mattress comfort level: Medium
Sold byKoala FurnitureDelivered byWalmart
5 out of 5 stars review

Verified Purchase

THE GOOD, THE BAD AND THE ..?

NICE PRODUCT, DELIVERED FAST, INFLATED FASTER THAN I THOUGHT, AND HAD NO BAD SMELL AT ALL. I WAS PLEASED WITH IT ALL EXCEPT ONE THING. THERE WASN'T ONE PIECE OF PAPER RELATED TO THE BRAND, TO HOW TO HANDLE IT ... SUPPOSE IT IS MY FIRST TIME,I WOULD NOT HAVE KNOWN HOW TO OPEN IT, HOW LONG TO LEAVE IT TO DEFLATE ETC... AT LEAST A GOOD WORD ABOUT OPERATION, QUALITY, WHERE IS IT MADE OF, WHAT ABOUT THE WARRANTY ETC... IT'S THE JOB OF A GOOD MANUFACTURER...

Helpful?6W7EVHANJ6DC5192292993
reply from Koala Furniture

Hello anonymous! Thank you for taking the time to share your feedback. We truly appreciate your insights, and we agree that providing clear instructions and product information is essential to ensuring a smooth experience for our customers. Your comments about the lack of product-related details, such as operation instructions, quality information, and warranty, are very valuable to us. We will definitely consider your suggestions as we continue to improve our product packaging and information materials. In the future, we aim to provide clearer guidelines to help our customers better understand how to use and care for our products. If you encounter any further questions or issues with our products, please don’t hesitate to reach out to us via email. We are always here to help and will be happy to assist you. Thank you again for your feedback and for choosing our product!

Jul 10, 2025
850Mom
Item details
Bed size: Queen
Mattress thickness: 12 in
Mattress comfort level: Plush
Sold and shipped byKoala Furniture
5 out of 5 stars review

Verified Purchase

Perfect for a teen or guest bedroom

I purchased this for my teenage who had outgrown his twin. Shipping was fast and even better was the price. We chose the plush option for no extra cost but it still felt firm enough to provide back support and teenage rough housing. Mattress was ready in less than 24 hours with no unusual smell or issues. Would definitely recommend to friends or family.

Helpful?6W7EVHANJ6DC5192292993
Jun 11, 2025
MomofTwo
Item details
Bed size: Full
Mattress thickness: 14 in
Mattress comfort level: Plush
Sold and shipped byKoala Furniture
5 out of 5 stars review

Verified Purchase

Amazing mattress! Great comfort and quality!

I am happily surprised by how awesome this mattress is! It’s huge, heavy and substantial. It comes in a box that’s very heavy. My son and I had to lift it together. Once it was released, it tripled in size. It is so comfortable! I have a beauty rest and it’s about as comfortable. My daughter will use it when she visits or my guests. They will have a very comfortable night.

Helpful?6W7EVHANJ6DC5192292993