Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14" Medium Mattress by Diamond

Brand: Diamond
$1,699.99
$1,899.00
Save $199.01
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Best For

Every Sleep Position

Firmness

Medium Comfort

Only 10 left in stock

Will Ship between

120 Night Sleep Trial

Take your dream bed home & rest easy—love it or your money back, plus we’ll find you a better fit.
Title

20 Year Warranty

20-year non-prorated warranty.
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Free USA Wide Delivery

We offer free delivery on orders over $100. Ready to ship in 2-4 business days.

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Product Description

Enjoy a weightless feel and orthopedic support, with our exclusive Graphene Bounce Foam & Responsive Gel Memory Foam that provides precise body contouring while the removable CoolTouch cover actively regulates temperature. Designed with a 6-inch orthopedic supportive core, the Onyx Ice foam mattress will keep you cool while providing optimal alignment and pressure relief.

  • Removable Zipper Cover w/Direct Contact Design
  • Cool Touch Temperature Regulating Fabric
  • Hyper-Cool PCM Active Cooling Layer
  • 2" Silver Cool Memory Foam
  • 2" Graphene Hyperconductive Cool Memory Foam
  • Certipur HD Comfort Layers
  • HD Responsive Support Core

Mattress Size

✅ Twin: Provides a comfortable sleep space for one child or adult.  

✅ Dimensions: 39" wide x 75" long.

 

✅ Twin XL: Perfect for taller individuals, ensuring a comfortable sleep.

✅ Dimensions: 39" wide x 80" long.

 

✅ Full: Children, Single Adults, Adults with Children and/or Pets

✅ Dimensions: 54" wide x 75" long.

 

✅ Queen: The most popular size, providing ample space for two adults to sleep comfortably. 

✅ Dimensions: 60" wide x 80" long.

 

✅ King: Experience generous space without crowding your partner. 

✅ Dimensions: 76" wide x 80" long.

 

✅ California King: Perfect for taller partners, Experience generous space without crowding your partner.

✅ Dimensions: 72" wide x  84" long.

Product Overview

Enjoy a weightless feel and orthopedic support, with our exclusive Graphene Bounce Foam & Responsive Gel Memory Foam that provides precise body contouring while the removable CoolTouch cover actively regulates temperature. Designed with a 6-inch orthopedic supportive core, the Onyx Ice foam mattress will keep you cool while providing optimal alignment and pressure relief.

  • Removable Zipper Cover w/Direct Contact Design
  • Cool Touch Temperature Regulating Fabric
  • Hyper-Cool PCM Active Cooling Layer
  • 2" Silver Cool Memory Foam
  • 2" Graphene Hyperconductive Cool Memory Foam
  • Certipur HD Comfort Layers
  • HD Responsive Support Core
key mattress benefits
CoolTouch Temperature Regulating Fabric 

This cover is designed with CoolTouch technology and a Direct Contact Design, offering an actively cooling surface that can be easily removed for cleaning.
Hyper-Cool PCM and Graphene Memory Foam Layers

Featuring a Hyper-Cool PCM (Phase Change Material) layer combined with 2 inches of graphene-infused memory foam, this mattress draws away excess heat and adapts to your body for a cool, comfortable sleep experience.
HD Responsive Support Core

A 6-inch orthopedic HD support core offers robust, firm support, promoting spinal alignment and relieving pressure for optimal body support throughout the night.
Silver Cool Memory Foam

The 2-inch Silver Cool Memory Foam provides additional cooling and cushioning, enhancing body contouring while keeping the sleep surface fresh and temperature-regulated.
Balanced Comfort

Medium comfort mattresses provide an ideal balance, accommodating varying sleep preferences. They work well for partners with different comfort needs, offering a versatile option if you don’t have a specific preference.

not sure if this is the right mattress for you?

If you're unsure whether this is the perfect mattress for you, don't hesitate to reach out to our sleep experts for personalized recommendations. We're always happy to assist our customers in finding the ideal mattress that fits both their comfort needs and budget.

Talk To a Sleep Expert

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Phone Number - 800-540-9851

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Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14
Onyx Ice Hyper Cool PCM & Graphene 14

Onyx Ice Hyper Cool PCM & Graphene 14" Medium Mattress by Diamond

$1,699.99