The convenience of a bed-in-a-box without giving up the quality of a Sealy Mattress. This Hybrid mattress gives you responsive support with the RESPONSEFLEX Encased Coil Unit. Surrounding these coils with the DURAFLEX EDGE, provides a firmer edge and more mattress surface use. Gel Memory Foam is designed for long lasting comfort and support. Sleep cooler with Copper Infused Foam, to dissipate heat, along with the SEALYCOOL Cover and COPPERICE Cooling Technology. A very good bed for any sleeping position.