Drive Devilbiss | Hybseat Hybrid-Power CushionDrive Devilbiss Hybseat Hybrid Power Cushion Enhanced Comfort and Relief with Foam Pressure Redistribution and Alternating Therapy Discover the Hybrid Power cushion, merging high spec foam's pressure redistribution with alternating therapy. Its castellated visco elastic foam moulds to the body's contours for effective pressure relief. Simultaneously, alternating cells aid in pressure relief during the power unit's operation. Key Features Foam Filled