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Unlock Ultimate Cooling Comfort Now Before It's Too Late

Firm 8-Inch Diamond Pro Gel Memory Foam California King Mattress

Responsive Gel Support
31% off
New arrival
$838.66 $1,219.99

Highlights

Cool Comfort Embracing Restful Nights of Balanced Support
3-Inch Diamond Pro Gel Memory Foam Cooling Layer
Ortho Support and Cooling Comfort for Restorative Sleep
4-Panel Diamond Quilted Border Stitching Pattern Design
More benefits & shopping perks below
FREE 5-Day Delivery
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Order now for free delivery 15 January 2026 – 21 January 2026 to

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Experience refreshing sleep through cooling gel memory foam comfort
+ 15 benefits & shopping perks
  • Feel supported all night by responsive foam easing pressure points
  • Spacious California King size invites peaceful rest for two sleepers
  • Enjoy lasting comfort crafted with care by Omega Lifestyles
  • Responsive gel memory foam adapts for spinal alignment and pressure relief
  • CertiPUR-US certified high density foam core provides stable support
  • Performance heat and wicking fabric regulates temperature while sleeping
  • Available in California King size for expansive sleeping comfort
  • Curated Essentials for Elevated Living: Elevate your daily routine with our handpicked home furnishings and wellness items—from plush recliners and premium mattresses to calming must-haves—bringing unmatched comfort, style, and serenity to every space.
  • Personalized Expert Advice: Get custom recommendations from our Dream Easy® Specialists, crafting a lifestyle solution that's uniquely yours for ultimate satisfaction.
  • Free Nationwide Shipping: Enjoy complimentary delivery on every order across the continental U.S. (excluding Hawaii and Alaska), simplifying your path to better living.
  • Secure, Private Checkout: Shop worry-free with our fully encrypted process, safeguarding your information at every step for complete peace of mind.
  • Risk-Free Trials & Returns: Buy confidently with our 100-day mattress exchange and easy 14-day returns on most products (excluding massage chairs and adjustable bases).
  • Earn $0.00 in Dream Easy® Rewards instantly with this purchase!
  • Exclusive VIP tiers with increased points and free gifts
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Designed for You

Omega Lifestyles memory foam mattress features responsive gel-infused foam and high-density orthopedic support for pressure relief and spinal alignment, plus heat-wicking fabric that sleeps cool. Available in multiple sizes, ideal for firm support and comfortable rest.

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Description

Experience Cooling Comfort with the Diamond Pro Gel Memory Foam Mattress

Discover a firm yet responsive sleep surface designed to align your spine and relieve pressure throughout the night. The Diamond Pro Gel Memory Foam mattress features advanced cooling technology with gel-infused foam and a heat-wicking fabric cover to keep you comfortably cool in every season. Certified Greenguard Gold for low emissions, this California King mattress combines high-density orthopedic support with adaptive memory foam that contours to your body shape. Weighing just under 44 pounds, it offers durable, long-lasting comfort made in the USA. Whether you’re a hot sleeper or need firm support for better posture, this mattress balances pressure relief with firm stability. Elevate your sleep quality and wake up refreshed every day.

Key Features

  • Cooling Gel-Infused Memory Foam: Regulates temperature to prevent overheating.
  • Performance Heat & Wicking Fabric: Moves heat and moisture away from skin.
  • High-Density Orthopedic Support Core: Provides firm support for spinal alignment.
  • CertiPUR-US Certified Foam: Ensures safe, eco-friendly materials.
  • Responsive Contouring: Adapts to body shape for pressure relief and comfort.
  • Cal King Size: Extra length and width for spacious sleeping.
  • Lightweight Design: Approximate weight 43.7 lbs for easy handling.
  • Made in the USA: Quality craftsmanship you can trust.

Specifications
  • Details
    Specifications and Measurements Guide

    Dimensions
    Mattress Size: California King
    Length: 84 inches (213 cm) standard for Cal King
    Width: 72 inches (183 cm) standard for Cal King
    Thickness: Not Specified
    Assembled Length: Not Applicable
    Assembled Width: Not Applicable
    Assembled Height: Not Applicable

    Weight
    Total Weight: 43.7 pounds (19.8 kg)

    Materials
    Main Material: Foam
    Filler: Memory Foam
    Color: Gray
    Certifications: Greenguard Gold Certified, CertiPUR-US Certified

    Technology Features
    Performance Fabric: Heat & Wicking Fabric for temperature regulation
    Gel Layer: Responsive Gel Memory Foam adapts to body contours
    Foam Density: High Density Comfort Layer with open cell technology
    Support Core: High Density Orthopedic Support Core for pressure relief
    Cooling Technology: Ultra Cooling Gel for heat dissipation
    Spinal Alignment: Designed for proper spinal support and contouring
    Memory Foam Properties: Responsive and pressure relieving
    Made In: USA
    Compatible With: Adjustable Bases

Delivery & Shipping Info

Free Shipping on All Orders Across the Contiguous U.S.!

  • Enjoy free, contactless delivery to your door with fast, reliable shipping across the contiguous U.S. on every order!
  • We offer post shipping premium services with room of choice setup and disposal options. Premium service options are offered after adding the item to your cart and are a 3rd party post-delivery service Powered by Loadup. These services can be closely coordinated with your item being shipped for peace of mind and convenience.
  • Note: We currently do not ship to Hawaii or Alaska
  • Shop now for convenient delivery tailored to you! Learn more about shipping options here.

Need more details? Read our Frequently Asked Questions here

Return Policy

Hassle-free returns! Not satisfied? Return most items* within 14 days of receipt for a refund or store credit. Learn more about our Dream Easy® Promise here

Need more details? Read our Frequently Asked Questions here

* Massage chairs and adjustable bases are not eligible for return. Mattresses are exchange only.

Firm 8-Inch Diamond Pro Gel Memory Foam California King Mattress - Omega Lifestyles
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