The new Serta classic collection provides a cooling and supportive mattress that delivers the trusted comfort of Serta. Cooling gel is swirled directly into a breathable foam designed to promote airflow and heat dissipation. In addition to providing contouring, cradling support, this system of up to 805 individually wrapped coils. Mattress Top Type: Tight Top Mattress Type: Innerspring Included: 1 Mattress(es), 1 Box Spring(s) Features: Breathable, Cooling, Non-Toxic, Wrapped Coils, Foam Layer, Cushioning Layer, Cooling Layer, Adjustable Base Compatible Additional Information: Relieves Pressure Points, Conforms To Body Coil Count: 459 Coils Manufacturer Warranty: 10 Year Bed Size: Twin Maximum Weight Limit: 990 Lbs Base Material: 100% Wood Comfort Type: Plush Mattress + Box Spring Measurements: 74.5 Length/Inches, 20 Depth/Inches, 38 Width/Inches Care: Spot Clean Certifications And Listings: 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.