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, Wrapped Coils, Cushioning Layer, Foam Layer, Cooling Layer, Non-Toxic Additional Information: Conforms To Body, Relieves Pressure Points Coil Count: 459 Coils Manufacturer Warranty: 10 Year Bed Size: Twin Maximum Weight Limit: 990 Lbs Base Material: 100% Wood Comfort Type: Firm Mattress + Box Spring Measurements: 38 Width/Inches, 19.5 Depth/Inches, 74.5 Length/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. Mattress arrives compressed in a box and then regains its size and shape after opening.