Spring Air mattresses features the exclusive Total Balance Dual Gauge innerspring for extra support in both the lumbar area and the perimeter of the mattress. For unprecedented comfort and support, the Back Supporter® mattress also incorporates Comfort Progression technology to maximize support where consumers need it most, between their shoulders and knees. Elements such as Pressure Relief Conformance Foam for the reduction of pressure points and optimum comfort and conformance, Convoluted Foam for extra comfort, and Latex Foam for the ultimate conformance that provides years of comfort and support are just some of the various foam combinations that Spring Air uses inside their new mattresses.