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Serta Perfect Sleeper Ultimate 12" California King Mattress - Extra Firm, Cooling Gel Memory Foam, Pocket Innersprings for Motion Isolation, Edge Support, CertiPUR-US Certified - Oasis Sleep

  • Based on 52 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, May 13
Order within 7 hours and 38 minutes
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Style: 12" Extra Firm


Size: California King


Features

  • Cool Twist Gel Memory Foam - This unique design features cooling gel swirled into premium memory foam. This breathable memory foam helps enhance airflow and heat dissipation for a feeling that can only be described as a cool, contouring type of comfort
  • Utilizes a 1 inch layer of Serta's PillowSoft Aire Soft Foam - This foam provides enhanced cushioning for exceptional comfort and promotes airflow through its unique, gently rippling design
  • 3 Zoned Coil Design - This 850-coil density system offers three support zones with targeted support for your lower back and hips and cradled comfort everywhere else
  • BestEdge Foam Encasement technology - This provides an extra-deep foam rail to help reduce edge roll-off and extend the sleep surface
  • Compatible with most frames - Including: traditional frames, box springs, platform frames, slatted frames, bunky boards, and adjustable frames
  • Shipping/Manufacturing Note due to the high-quality manufacturing and substantial components contained within this mattress it cannot be compressed and is shipped full-size. Delivery Services availability and add-on costs determined by region. If Delivery services are available in your area you will be prompted to add them to your cart at checkout. Otherwise, Mattress will come standard with door-drop-off. If Delivery Services are not available in your region it is recommended you seek assistance/multiple persons to move due to the products heavy-bulky nature.

Description

Our celebrated mattress, the Serta Perfect Sleeper, is new and improved with a focus on what matters most: consistent, restful sleep for every type of sleeper—back, side, stomach, or snuggled up to someone else. With zoned support, contouring memory foams, and a cooling cover for comfortable sleep all night long, this mattress is your perfect sleep solution every night.

Brand: Serta


Size: California King


Product Dimensions: 83.5"L x 72"W x 12"Th


Item Weight: 97 Pounds


Item Firmness Description: Extra Firm


Cover Material: Polyester Blend


Number of Layers: 7


Fill Material: Gel Memory Foam, Pccketed Coil


Special Feature: Antimicrobial Feature, Breathable, Low Motion Transfer, Pressure Relief, Temperature Regulating


Color: Dark Blue


Item Firmness Description: Extra Firm


Number of Layers: 7


Additional Features: Antimicrobial Feature, Breathable, Low Motion Transfer, Pressure Relief, Temperature Regulating


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Number of Mattress Coils: 850


Is Customizable?: No


Portable: No


Is Foldable: No


Size: California King


Item Dimensions L x W x Thickness: 83.5"L x 72"W x 12"Th


Item Weight: 97 Pounds


Item Depth: 12 inches


Item Dimensions: 83.5 x 72 x 12 inches


Color: Dark Blue


Style Name: 12" Extra Firm


Brand Name: Serta


Age Range Description: Adult


Model Name: Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress


Product Benefits: Back Pain Relief, Improves Sleep, Lumbar Support, Pressure Relief, Reduces Toss & Turn


Model Number: 50


UPC: 747935970632


Manufacturer: Serta Simmons Bedding, LLC.


Item Type Name: Bed Mattress Conventional


Included Components: Mattress


Cover Material: Polyester Blend


Fill Material: Gel Memory Foam, Pccketed Coil


Product Care Instructions: In order to protect your mattress from stains and spills, we recommend using a mattress protector. This will also help with the overall health and lifespan of your mattress., To clean your mattress, we suggest applying baking soda to the soiled area and letting it stand for about 15 minutes. Then, vacuum and repeat as needed. It's important that you also air the product out as much as possible., We do not recommend applying liquids to the product. Applying liquids may stain the fabric and could potentially make the soiled area worse. Moisture or chemicals applied directly to the mattress can cause premature breakdown of the foam and damage the product.


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Memory Foam, Pocketed Coils


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 13

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Perfect mattress
Style: 12" Extra Firm Size: Full
I’m really glad 😌 what I got, exactly 👍 what I need. So comfortable and gives me a good night sleep 😴. Thanks for your product.
Reviewed in the United States on November 7, 2025 by AliceP

  • Perfect if you love extra firm beds!
Style: 12" Extra Firm Size: Queen
If you like a firm bed this is the one! I’m a side sleeper that likes a really firm bed and this is a quality mattress. Great quality and not a bad price. I love mattresses that can be rotated and this one can
Reviewed in the United States on September 27, 2025 by April Nichols

  • Extra Firm? No.
Style: 12" Extra Firm Size: Queen
Is this mattress WAY better than the one I had? Absolutely, YES. Is it EXTRA FIRM, as described & sold? I guess that is argumentative. Not throwing it out, but I wouldn’t buy it again.
Reviewed in the United States on December 29, 2025 by c h cullen

  • Looks like a good choice
Style: 12" Extra Firm Size: Queen
Comfortable, soft with good support
Reviewed in the United States on September 22, 2025 by NADIA

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