This upgraded posturepedic spring mattress features higher quality coils and an added layer of memory foam. The reinforced center third delivers even more comfort and targeted support, and a duraflex coil edge increases durability. The soft knit cover is treated with moistureprotect to help keep you cool, and surface-guard technology to keep the mattress protected. Mattress Top Type: Tight Top Mattress Type: Innerspring Included: 1 Mattress(es), 1 Box Spring(s) Features: Cooling, Non-Toxic, Antimicrobial, Cooling Layer, Cushioning Layer, Wrapped Coils, Foam Layer, Adjustable Base Compatible Additional Information: Suitable for Adjustable Bed Frames Coil Count: 601 Coils Manufacturer Warranty: 10 Year Limited Bed Size: Twin Maximum Weight Limit: 500 Lbs Base Material: 100% Polyurethane Comfort Type: Medium Mattress + Box Spring Measurements: 20.5 Height/Inches Care: Spot Clean Certifications And Listings: Cpsc - 16 Cfr 1633 Compliant, Cpsc - 16 Cfr 1632 Compliant, Certipur-Us Certified 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