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Califonia King Mattress [Upgraded Strengthen], 12 Inch Gel Memory Foam Hybrid Cal King Mattress in a Box with Independent Pocket Spring, Extra Edge Support, Medium Firm, Back Pain Pressure Relief

  • Based on 106 reviews
Condition: New
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$299.99 Why this price?
Save $170.00 was $469.99

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Color: White


Item Thickness: 12.0 Inches


Size: California King


Features

  • Deep Sleep Overnight: California king mattress features multiple layers of high-density memory foam and enhanced independent pocket spring to fully care for your body curves, relieving muscles pressure and back pain, allowing you to enjoy quiet and comfortable sleep.
  • Fresh & Breathable: Cal king size includes gel memory foam and porous breathable fabric, which increases breathability by 30%, promotes airflow and provids refreshing cooling effect, it keeps you from feeling overheated during the night. Enjoy all-night comfort and relaxation, you will wake up feeling refreshed.
  • Upgraded Edge Support: Our cali king mattresses have upgraded the built-in Pocket Springs to make mattress more stable. Unlike the traditional, we offer mattress with the addition of 3 coils to targeted and stable support, prevent you from sliding off the edge of the mattress during night sleep.
  • Quiet Motion Isolation: Our California king bed mattress is equipped with individual pocket springs and slow rebound memory sponge that effectively absorb and isolate vibration noise, ensuring undisturbed sleep even if your partner turn over during sleep. If you are still struggling with this problem, please consider our mattress.
  • California King Mattress In A Box: Our 12 inch hybrid mattress offers 100 night trial and 10 years of support, mattresses have been tested for stress and support. Please maintain a safe distance during unboxing to avoid injury from the mattress rebound. After unboxing, please allow 72 hours for the mattress to fully expand.

Brand: EEN EEN SLEEP


Size: California King


Product Dimensions: 84"L x 72"W x 12"Th


Top Style: Pillow Top


Number of Layers: 8.0


Fill Material: Independent Pocket Springs, Gel Memory Foam, Memory Foam


Weight Limit: 1500 Pounds


Special Feature: Strong Support, Pressure Relief, No Soreness, Breathable, Temperature Regulating, Soft Comfortable, Non-Fiberglass, New High-end Luxury Mattress, 100-Night Trial, Top Brands See more


Color: White


Coil Type: Pocketed Coil


Product Dimensions: 84 x 72 x 12 inches


Item Weight: 66.6 pounds


Manufacturer: Eensleep


Country of Origin: Indonesia


Item model number: EC 12CK-1


Date First Available: April 16, 2025


Frequently asked questions

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View our full returns policy here.

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Top Amazon Reviews


  • GREAT MATTRESS
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
OMG this bed beyond met my expectations lol. It is sooooo comfortable...feels like a pillow top. I never want to get up in the morning. I was definitely not expecting this amazon mattress to fully meet my expectations. a mattress in a box? what lol.....MUST BUY you wont be disappointed. Great price!! ... show more
Reviewed in the United States on March 27, 2025 by shante Taylor

  • Great mattress for price!
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
This is a great mattress for the price. I got a king size mattress. As a previous review stated, you definitely want to put your mattress on the area where it will stay, it was HEAVY! I just rolled it out onto my bed and it puffed up immediately. I received it yesterday and so far it has fluffed up a lot except for the corners. But, it says to let it sit for 48 to 72 hours so we will see! Either way, it’s super comfortable and a great buy, definitely recommend! ... show more
Reviewed in the United States on April 13, 2025 by Placeholder Placeholder

  • Not bad it's OK Decent for the price u pay
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
It's comfortable, but not the best. It'll work. It came out of the plastic and expanded as portrayed.. the edges of the bed doesn't really have support. The middle is OK. Also didn't expand to 14 inches. Soft top where you can't really feel the springs but you know they are there.
Reviewed in the United States on March 13, 2025 by Corie Wilson

  • Firmer mattress
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
So far so good, it's been almost 2 weeks. Best is firm, soft on the very edges. But otherwise I sleep great!
Reviewed in the United States on March 24, 2025 by Jessica Phillips

  • Great mattress!!
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
Great mattress for the price & will buy for future beds. Took a few hours to fluff (as expected & listed). At first it didn’t look promising but after letting it sit and then kinda shaking it and fluffy it, it was very comfortable and not extremely heavy. At first you will feel the springs but once the fluff re expands, it was great!!! ... show more
Reviewed in the United States on March 13, 2025 by Bryson James Miller

  • Surpassed my expectations, love it
Color: White Item Thickness: 12.0 Inches Size: King (U.S. Standard)
I was skeptical buying a mattress off of Amazon, but I love it! I let it puff up for 3 days like it recommends and it is so comfortable. When you sit on the edge of the bed it's not as firm as the middle of the bed but it's still 10/10 in my opinion. Comes with a tool to cut the plastic so you don't cut the mattress, it was really easy for me to unpackage and open it up by myself when my boyfriend was at work. ... show more
Reviewed in the United States on April 1, 2025 by Brianna Brianna

  • So much room for activities!
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
This mattress is heavenly! Exactly what I was wanting and there is room for all of your activities and sturdy support! No aches and pains here 🤣🤣
Reviewed in the United States on March 25, 2025 by Laura Malone

  • Ok for a bed in the box but does not get to full size
Color: White Item Thickness: 14.0 Inches Size: King (U.S. Standard)
I ordered 2 of these mattress a king and a full, the king was suppose to be 14 inch and the full was suppose to be 10 inch. They are comfortable and did unroll pretty quick and for the most part decompressed. They did not reach there full size tho, the king is only measuring 12 to 13 inches amd the full only about 8. I've tried to talk with the sellers but they do not really ever get back to you. I've sent pictures like they want but that's where it's left. They are comfortable for the most part but if you are needing somthing with extra padding for pain do not waist the money on the 14 inch as it never get there. You can not return these as they would have to go back freight threw ups or fedex, they can not go back normal ups or fedex once they come out of the box and decompress. I know I work in the industry. Just be aware when buying one of these. The full stayed Simi curled at the corners as well, it's for a child so he dosnt really mind and hopefully it will flatten out over time. ... show more
Reviewed in the United States on March 31, 2025 by Sara

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