Order now and the mattress in a box will be quickly delivered to your home! Our 8'' bed mattress is composed of 5 different layers. The surface is made of 100% stretch fabric polyester which has excellent breathability and can help dissipate heat. Inside the mattress, in order, are memory foam, soft foam, and high-density foam. Memory foam offers the outstanding softness and high-density foam provides adequate support. When you receive the package, please unroll the mattress and let it recover for 72 hours, then you can place it in your ideal room.