Onyx Ice Medium Foam Mattress
The Diamond Mattress Onyx Ice is a 14-inch, medium-feel foam mattress engineered for superior cooling and support. It features layers of graphene bounce foam and responsive gel memory foam, delivering a weightless feel and precise body contouring. Beneath these comfort layers, a robust 6-inch orthopedic supportive core stabilizes the mattress, promoting optimal spinal alignment. This USA-made mattress is designed to keep you cool throughout the night while offering deep pressure relief and lasting stability for restorative sleep.
$1699.00
Owner Satisfaction
4.5
/ 5
Category Rank
1046
/ 6148
#1046 in Mattresses
Price vs Category Average
+2%
Above average
Thickness
14
/ inches
Who it's for
- Advanced Cooling Comfort
- Balanced Pressure Relief
- Exceptional Motion Isolation
Who should skip it
- Less Responsive Feel
- Limited Edge Support
- Initial Off-Gassing Period
Key Specs
Thickness
14 inches
Firmness
Medium
Cover Material
CoolTouch Advanced Cooling Cover
Core
6-inch High Density Supportive Core
Foam Layers
Graphene Infused Memory Foam, Gel Memory Foam, Hyper Conductive HD Foam
Warranty
20 years
Origin
Made in the USA
Available Sizes
Twin, Twin XL, Full, Queen, King, CA King
Features
- Compatible with adjustable bases
- Offers a weightless sleeping sensation
What customers say
Consumers consistently highlight the exceptional comfort and effective cooling technology of the Onyx Ice mattress. Sleepers appreciate the medium foam feel, noting it provides excellent pressure relief without sinking too deeply. The Ice feature is frequently mentioned as genuinely helping regulate temperature throughout the night, making it a strong choice for hot sleepers seeking restful, undisturbed sleep. This combination of supportive comfort and advanced cooling drives high satisfaction.
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