Comfort level: luxury plush 2 layers of phase change material (PCM) 2" copper-infused cooling memory foam; 3" sculpted body-contouring comfort foam Wrapped coils Premium pressure-sensitive NanoCoil unit; individually wrapped coil pack 4-way stretch knit cover Adjustable base compatible 10-year non-prorated warranty Note: Purchasing mattress and foundation from two different brands may void warranty; see warranty for details Foundation/box spring sold separately Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening State recycling fee may apply Made in USA