Designed and tested with input from the National Sleep Foundation, this Serta Perfect Sleeper® offers a terrific value plus comfort and support. It also provides: Pillowtop comfort Advanced Comfort Quilt® Pillo-fill® Soft Convoluted foam 1" Comfort Foam Serta® Insulator ½" Memory Foam 3" Convoluted Topper EuroCoil 3Zone 864 innerspring system with foam encasement - responds to individual body weights, shapes, sleep patterns and positions for exceptional support FireBlocker® Serta Augustine King Low Profile Mattress Set10 year non-prorated warranty for the set.