Mattress Top Type: Tight Top Mattress Type: Hybrid Included: 1 Mattress(es), 1 Box Spring(s) Features: Removable Cover, Adjustable Base Compatible, Foam Layer, Antimicrobial, Cooling Layer, Full Support Additional Information: Suitable for Adjustable Bed Frames, Eliminates Motion Transfer, Relieves Pressure Points, Conforms To Body Coil Count: 700 Coils Manufacturer Warranty: 10 Year Limited Bed Size: Twin Xl Base Material: 50% Polyurethane, 50% Metal Comfort Type: Medium Mattress + Box Spring Measurements: 80 Length/Inches, 22 Depth/Inches, 38 Width/Inches Care: Spot Clean Certifications And Listings: Certipur-Us Certified, Cpsc - 16 Cfr 1633 Compliant, Cpsc - 16 Cfr 1632 Compliant Country of Origin: Made in US 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.