Mattress Top Type: Tight Top Mattress Type: Hybrid, Memory Foam Included: 1 Mattress(es), 1 Box Spring(s) Features: Cooling, Removable Cover, Cooling Layer, Antimicrobial, Foam Layer, Cushioning Layer, Full Support, Non-Toxic Additional Information: Relieves Pressure Points, Suitable for Adjustable Bed Frames, Eliminates Motion Transfer, Conforms To Body Coil Count: 612 Coils Manufacturer Warranty: 10 Year Limited Bed Size: Twin Measurements: 11 Height/Inches, 38 Width/Inches, 74 Length/Inches Maximum Weight Limit: 650 Lbs Base Material: 50% Metal, 50% Foam Comfort Type: Medium Mattress + Box Spring Measurements: 38 Width/Inches, 74 Length/Inches, 20 Depth/Inches Care: Machine Washable Cover Certifications And Listings: Cpsc - 16 Cfr 1632 Compliant, Certipur-Us Certified, Cpsc - 16 Cfr 1633 Compliant Country of Origin: Made in US This product is responsibly packaged or labeled using recycled, alternative materials, or items designed to reduce future environmental impact. 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