Enjoy endless possibilities for restful sleep with this hybrid innerspring twin mattress. You get the best of both worlds: the pressure relief of cooling gel-infused memory foam, coupled with body-contouring pocketed coils for superior support. Rest assured that high-density quilt foam provides the comforting feel you love. Plus, this mattress arrives in a box for quick, easy setup. Simply bring it to your room, cut away the plastic wrap, and unroll. Foundation/box spring available, sold separately. Comfort level: medium High-density gel memory foam lumbar support High-density quilt foam Individual power packed wrapped coils 2 perimeter rows of 9" 13-gauge pocketed coils for edge-to-edge support 10-year non-prorated warranty Adjustable base compatible Foundation/box spring sold separately State recycling fee may apply Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening