The Matrix firm hybrid mattress provides rich surface comfort with deep down support. Memory foam, comfort layers, and a Gel Matrix layer make this mattress firm and soft at the same time, and lets you sleep cool throughout the night. The single zone pocketed coil support system with edge support offers motion control, pressure point relief, and localized support. This mattress is CertiPUR-US certified, hypoallergenic, and compatible with all traditional box springs, slatted foundations, solid foundations, and adjustable bases.