Onyx Ice Firm Foam Mattress
The Diamond Mattress Onyx Ice is a 14-inch, firm-feel gel memory foam mattress engineered to maintain a cool sleeping surface while delivering superior alignment and pressure relief. Its construction features layers of graphene bounce foam and responsive gel memory foam, creating a weightless feel and precise body contouring. A robust 6-inch orthopedic supportive core is integrated to provide essential stability and support for your back and spine. This USA-made mattress combines advanced cooling technology with durable, supportive materials for restorative sleep.
$1699.00
Owner Satisfaction
4.4
/ 5
Category Rank
2392
/ 6148
#2392 in Mattresses
Price vs Category Average
+2%
Above average
Thickness
14
/ inches
Who it's for
- Targeted Spinal Support
- Advanced Cooling Technology
- Superior Motion Isolation
Who should skip it
- Limited Pressure Relief for Side Sleepers
- Moderate Edge Support
- Significant Weight and Handling Difficulty
Key Specs
Thickness
14 inches
Firmness
Firm
Cover Material
CoolTouch Advanced Cooling Cover
Foam Layers
Graphene Infused Memory Foam, Hyper Conductive HD Foam, Gel Memory Foam
Core Support
6-inch High Density Supportive Core
Warranty
20 years
Origin
Made in the USA
Available Sizes
Twin, Twin XL, Full, Queen, King, CA King
Features
- Features advanced cooling technology via the CoolTouch cover
- Utilizes graphene infusion for enhanced material performance
- Provides orthopedic support suitable for back health
- Offers precise body contouring and pressure relief
- Compatible with adjustable bases
What customers say
Customers consistently highlight the exceptional cooling technology of the Onyx Ice mattress, noting a significant reduction in overheating compared to other foam options. The firm support is highly praised by those needing robust spinal alignment, making it a favorite for back and stomach sleepers. While the firmness is a key feature, buyers feel the quality justifies the price point, appreciating the immediate relief from heat and the durable construction. This mattress successfully delivers on its promise of cool, supportive sleep.
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