Copper Crest Hybrid
Experience cooler, more restorative sleep with the Copper Crest Hybrid. Copper-infused comfort materials help regulate temperature while delivering pressure-relieving comfort, while the individually pocketed coil system provides balanced support and helps minimize motion transfer. Crafted with premium CertiPUR® HD comfort layers, it's designed for lasting comfort and dependable support night after night.
- Cool Touch Copper Infused Fabric
- Copper Infused Air Response Foam
- Copper Infused Memory Foam
- CertiPUR® HD Comfort Layers
- Foam Encased 7-Series Individually Pocketed Coil System
- 20-Year Warranty
- 14" Profile
Twin: 38" x 75"
Twin XL: 38" x 80"
Full: 54" x 74"
Queen: 60" x 80"
King: 76" x 80"
Cal King: 72" x 84"
Diamond Mattresses meet the most stringent certification standards, ensuring safe, non-toxic materials, a healthier sleep environment, and sustainable practices for your peace of mind and are fiberglass-free. All our foams are CertiPUR-US certified and mattresses hold Greenguard Gold certification.
Need Mattress Setup and/or Removal?
A professional team will come to your home at a date and time that works for you to set up your new mattress, remove your old one, or both. Old mattresses are always disposed of using the most environmentally responsible methods available.
To add this service, [click here] to visit the mattress service product page, choose either Setup Only or Setup + Removal, add to cart, and complete checkout. Once your order is placed, you will receive an email to schedule your appointment.
California Customers: Mattress removal is free of charge by law for mattress orders placed directly through our website. To receive this service, please select the California removal option on the mattress service product page.
DIAMOND COPPER
PERFORMANCE COOLING COLLECTION
CONDUCTIVECopper Cooling.
Copper is one of nature's best thermal conductors, continuously drawing heat away from your body to help maintain a cooler sleeping environment throughout the night.
- ✓Actively conducts heat away — not just passive venting
- ✓Cooler sleeping surface from the moment you lie down
- ✓Maintains a comfortable temperature all night long
- ✓Feel cooler from the moment you fall asleep until morning
HIGH-DENSITYComfort.
Premium high-density comfort layers gently contour to your body while maintaining their support night after night. No excessive sinking. Just supportive comfort.
- ✓Gentle contouring without excessive sinking
- ✓Maintains shape and support longer than conventional foam
- ✓Pressure-relieving comfort exactly where you need it
- ✓High-density durability built to last
INDIVIDUALLYWrapped Coils.
Individually wrapped coils respond independently to your body, reduce partner motion and allow airflow throughout the mattress.
- ✓Each coil moves independently to your body
- ✓Minimizes partner disturbance while you sleep
- ✓Micro-coils and breathable foams keep air moving all night
- ✓Responsive comfort — contours where you want, supports where you need
Diamond Copper
See It In Action
Air Response Foam
Copper Memory Foam
Certifications
Safeguarding your family
Certified for a Healthy Home
All Diamond mattresses proudly carry GREENGUARD Gold certification, ensuring they meet strict health-based and environmental criteria for low chemical emissions.
MATTRESS SIZE GUIDE
Find the correct mattress size to fit your needs.
FAQs
The Diamond Mattress 120-Night Trial and Return Guarantee ensures you have plenty of time to decide if your mattress is right for you. If you’re not satisfied within 120 nights of delivery, we offer a hassle-free return or exchange, with no restocking or return shipping fees.
Just reach out to our customer service team via contact page or chat. You must give your mattress a fair trial of 30-60 days for proper adjustment. Returns are only valid for the original owner, purchases made directly from Diamond Mattress and must include the original law tag.
Returned mattresses are not resold but donated, and once confirmed, you’ll receive a full refund. Each customer is eligible for one return per household. Returns or exchanges due to wear, stains, or misuse (like improper foundation or mold) are not accepted.
No, Diamond mattresses are completely fiberglass-free. Our commitment to our customers' safety and comfort extends to every aspect of our production process, including our dedication to using clean, sustainable materials.
All our mattress foams are CertiPUR-US® certified, meaning they are made without harmful substances like ozone depleters, phthalates, mercury, lead, or other heavy metals and have low VOC emissions, ensuring a healthier sleep environment. Furthermore, our mattresses are GREENGUARD Gold certified, meeting the highest standards for healthy indoor air quality and promoting responsible manufacturing practices.
You can use any base that works for you, as long as it has a solid top or slats no more than 4 inches apart. A stable, supportive frame is essential to prevent sagging and ensure the longevity of your mattress.
Upon receiving your mattress, open the box, remove the rolled mattress, and carefully cut the outer wrapping to allow it to expand.
For optimal results, give it 24-72 hours to fully expand. To avoid damaging components and voiding the warranty, do not leave the mattress in the box for more than 4 months. We recommend that two adults handle the setup process, exercising caution while lifting, positioning, and unwrapping the mattress.
