Peninsula is part of our classic Sealy essentials collection and is engineered for a great night's sleep, delivering trusted Sealy quality at an affordable price. This affordable mattress features traditional seal support gel foam for flexible support and all-over comfort. Mattress Top Type: Tight Top Mattress Type: Innerspring Included: 1 Box Spring(s), 1 Mattress(es) Features: Foam Layer, Cushioning Layer, Adjustable Base Compatible Additional Information: Suitable for Adjustable Bed Frames, Conforms To Body Manufacturer Warranty: 1 Year Limited Bed Size: Twin Maximum Weight Limit: 500 Lbs Base Material: 100% Polyurethane Comfort Type: Medium Mattress + Box Spring Measurements: 75 Length/Inches, 39 Width/Inches, 14.5 Depth/Inches Care: Spot Clean Certifications And Listings: Cpsc - 16 Cfr 1632 Compliant, Certipur-Us Certified, Cpsc - 16 Cfr 1633 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.