Beautyrest Silver® is engineered to maintain its shape and consistent comfort over the life of your mattress, so that your sleep will be every bit as restful years from now as it is today. A better you begins with a better night’s sleep. The lasting resilience of Beautyrest Silver ensures you’ll Be More Awake™ every day — for years to come. Benefits: INCREASED DURABILITY 900 Series Beautyrest® Pocketed Coil® Technology: provides flexible support precisely where it is needed and isolates motion between two sleepers. KEEP YOUR MATTRESS FRESH AND COOL DualCool™ Plus: Moisturewicking fabric and antimicrobial performance layer work to keep your mattress fresh and cool while moving heat and moisture away. PRESSURE RELIEVING COMFORT Dynamic Response™: memory foam has a supportive and unique feel to optimize your every move with conforming back support. It conforms and contours to your personal shape to help eliminate pressure points. Mattress Top Type: Tight Top Mattress Type: Innerspring Included: 1 Mattress(es), 1 Box Spring(s) Features: Cooling, Cushioning Layer, Cooling Layer, Wrapped Coils Coil Count: 583 Coils Manufacturer Warranty: 10 Year Limited Bed Size: Twin Base Material: 70% Polyurethane, 30% Polyester Comfort Type: Extra Firm Mattress + Box Spring Measurements: 20.75 Height/Inches Care: Spot Clean Certifications And Listings: Cpsc - 16 Cfr 1633 Compliant, Cpsc - 16 Cfr 1632 Compliant Country of Origin: Made in US Visit our Furniture & Mattress Customer Care Center for delivery options, protection plans and other services. Problem with an order or need help with a return? Our Furniture & Mattress Customer Service agents will be happy to help. Give us a call at 1-800-442-7902 Don’t forget to print off your delivery checklist to avoid any delays or issues when delivering your item. Set includes mattress plus box spring/foundation. King and Cal. King mattress sets feature 2-piece side-by-side foundations for easier navigation in tight spaces. This mattress meets the requirements of 16CFR Part 1632 (federal flammability (open flame) standard for mattresses and mattress pads This mattress meets the requirements of 16CFR Part 1633 (federal flammability (open flame) standard for mattress sets) when used with foundation