*Cool-Touch Fabric-Special conductive yarns actively move heat through the fabric to maintain a cool, comfortable sleeping environment all night long
*Graphene Memory Ace-Regulates temperature for deeper sleep by drawing excess heat away from your body while absorbing pressure so you can sleep undisturbed without tossing and turning
*Graphene Memory Foam-Highly conductive graphite memory foam offers cool and supportive sleep with little to no motion transfer
*Hi-Definition Transition Layer-Enhances the buoyant, weightless feel of the mattress
*High Density Orthopedic Support Core-Pressure relief and contouring is delivered with our stable high density, CertiPUR-US® certified foam core to provide support and comfort.
*Trizone Comfort Layers-The top and bottom thirds are slightly softer that the center third. The center third is firmer to account for most of our weight placement.
*CertiPUR-US® Certified Foam -High-end high-density soy based foams 1.5lb - 1.8lb foams from the best foam suppliers in the nation
*20 Year Warranty
*Proudly Made in the USA- Onyx Ice by Diamond Mattress in Rancho Dominguez, California
Specifications
Dimensions
Specifications
Specifications
| Material Type |
Memory Foam |
| Color Category |
Other |
| Brand |
Diamond Mattress |
Shipping
- Free Shipping: We exclusively offer free standard shipping to customers located in California and Nevada.
- Processing Time: In-stock items typically ship within 1–3 business days.
- Transit Time: Small parcels (UPS/FedEx) take 1–7 business days; truck freight deliveries take 3–10 business days.
- Tracking: Tracking information is provided via email immediately after your order has shipped.
- Damage on Delivery: Please inspect your order upon arrival. Note any visible damage with the driver and contact us within 48 hours to process a claim.
Returns & Cancellations
- Return Window: Eligible items may be returned within 30 days of delivery.
- Condition: Items must be in new, unused condition, in original packaging, and returned with a valid Return Merchandise Authorization (RMA).
- Fees: Returns are subject to a 20% restocking fee. Outbound and return shipping costs are the responsibility of the customer.
- Refunds: Refunds are issued to the original form of payment within 2 business days after inspection.
- Cancellations: Orders may be cancelled prior to shipment. Once a tracking number is issued, the order must be processed as a return.
Exclusions
- Custom or special orders, closeout, discontinued, and surplus items are non-returnable.
- For health and safety, bedding (including mattresses, toppers, pillows, and comforters) is non-returnable.
Warranty & Care
All products sold on this site are covered by the
limited warranty provided by the manufacturer.
Warranty terms vary by brand and product. In general, manufacturer warranties
cover defects in materials and workmanship under
normal residential use for a limited period.
- Warranties are non-transferable and apply only to the original purchaser.
-
Coverage excludes normal wear and tear; misuse, abuse, or negligence; improper assembly,
installation, or maintenance; unauthorized modifications or repairs; damage from accidents,
freight, or handling; products used in commercial, rental, or institutional settings; and items
sold “as-is” or as floor models.
-
Warranty service, parts replacement, or repairs are provided at the
manufacturer’s discretion. If an identical part or product is unavailable,
a comparable substitute may be offered.
- Some manufacturers exclude shipping, labor, inspection, and/or packaging costs from coverage.
How to File a Warranty Claim
- Review the warranty terms on the manufacturer’s website for your item.
- Submit your claim directly to the manufacturer and follow their process.
- Have your proof of purchase (sales receipt or invoice) and any requested photos or details ready.
For brand-specific warranty details or contact information, please visit the applicable manufacturer’s
website or customer service page.
This page summarizes general manufacturer warranty practices for convenience only and does not modify or replace any manufacturer’s written warranty. Rights vary by brand and by state.