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

5,051 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 Memory Foam Hybrid Mattress in a Box Pressure Relief ComfortableQueen 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 SizeCalifornia King
Mattress Thickness12 in
Mattress Comfort LevelMedium

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.
Generated by AI

Specs

Bed size, California KingMattress comfort level, MediumMattress type, Hybrid MattressesMattress thickness, 12 inBrand, KOWMattress top type, Pillow Top

About this item

Product details

Our mattress has undergone significant improvements in its structure compared to the previous version. Firstly, we have prioritized comfort and durability in the choice of materials. Additionally, the spring structure has been reinforced on all sides for enhanced stability. To facilitate easy transportation, we have added handle details on both sides of the mattress. Furthermore, the top of the mattress has been designed to be even more plush, combining the softness of clouds for an indulgent adult sleeping experience. Package Weight : 65 lb

  • CertiPUR-US & Skin-friendly
  • Breathable Construction
  • KOW Mattresses Compatible with Adjustable Base
  • Mattress Edge Support for Adult
  • Low Motion Transfer
  • Mattress in a Box, 104 lb Weight
  • 12" California King size Mattress Medium Soft Mattress Memory Foam Mattress provide you with a safe sleeping harbor.
  • KOW 12 inch Hybrid mattress is composed of safe materials, free of harmful substances such as formaldehyde, fiberglass, mercury and other heavy metals.
  • Memory Foam Mattress Perfect top layer of support your body weight, maintains your body shape to rest in the best condition.
  • Bed-in-a-Box: Mattress Compressed, rolled, and shipped in a box for simple setup; easily fits through narrow hallways and staircases.
  • Warranty: Our bed mattress come with 10 years warranty. If for any reason you are unsatisfied, contact us at any time for support.
  • NOTE: Please allow up to 48-72 hours for the Gel mattress to fully expand and for any potential odors to dissipate.
  • New Upgrade 7-ZONE SUPPORT: Hundreds of pocket springs inside the mattress to deliver 7-zone targeted support for your head, shoulder, back, waist, hips, legs, and feet. You'll sleep in ergonomic alignment with all-night comfort.
info:
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Specifications

Bed size

California King

Mattress comfort level

Medium

Mattress type

Hybrid Mattresses

Mattress thickness

12 in

Directions

Fabric Care Instructions

Dry Clean

Warranty

Warranty information

10-Year Limited Warranty

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Customer ratings & reviews

4.3 out of 5 stars
stars
5,051 ratings1,185 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars73% (3,662)
  2. 4 stars10% (501)
  3. 3 stars5% (238)
  4. 2 stars3% (152)
  5. 1 star10% (498)

Reviews summary

Pros

  • : Provides great value at a lower cost.
  • : Setup can be completed in minimal time.
  • : Provides comfort and support to alleviate pain.
  • : Provides good support for a restful experience.
  • : Provides a balance of softness and support.

Neutral

  • : Provides both customized support and occasional instability.
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Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 1,185 reviews

Jul 17, 2026
Reviewer name: anonymous
Top Reviewer
Item details
Bed size: Twin
Mattress thickness: 14 in
Mattress comfort level: Medium
Sold and shipped byKoala Furniture
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Beautiful Twin Mattress

I am blown away by the size, quality, the feel, cute look, and comfort. I also appreciate the sale price. It definitely is not the twin size mattresses I grew up with 1957. It is so thick and cushy but thesheetsIboughtaren'tbigenough but that'sokayIwillbuytherightones. My Sister liked it so much too so I bought her one. The only downside is it didn't arrive as scheduled.

Helpful?6W7EVHANJ6DC5192292993
Jul 2, 2026
Reviewer name: anonymous
Item details
Bed size: Full
Mattress thickness: 14 in
Mattress comfort level: Plush
Sold and shipped byKoala Furniture
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

worth buying...!

mattress is so comfortable...! I did not expect a mattress and a box to be of such great quality and comfort I highly recommend buying this over purchasing one from a furniture company..!

Helpful?6W7EVHANJ6DC5192292993
Jun 20, 2026
Reviewer name: Briceida
Item details
Bed size: Full
Mattress thickness: 12 in
Mattress comfort level: Medium
Sold byKoala FurnitureDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

excellent very conformable

Helpful?6W7EVHANJ6DC5192292993
Current price is Now $249.99
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was $489.99
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Sold by Koala FurniturePro Seller
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4.373646209386282 out of 5 stars
4.4 stars out of 5, based on 1116 seller reviews(4.4)
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