The Dupont Hills Collection offers you a great value mattress that features Individually Wrapped Coils, for custom support along with motion dispersion. Dense Foam Encased Edge provides more mattress surface use and a firmer edge. Comfort layers including two layers of Gel Support Foam, create cradling support and heat dissipation. A cover made of EvenCool™ Fabric, lets you sleep cooler all night long. This firm comfort is good for a back or stomach sleeper.