The Matrx® PSP (Posture Seat Polymer) Cushion combines the stability and support of the PS foam base with a polymer overlay for extra protection and shear reduction. An ultra lightweight cushion providing worry free skin protection and positioning. Multiple sizes available Startex™ outer cover – Reversible can be usedsmooth or fabric side out Moisture resistant and breathable to keep cooland dry Includes hook and loop strips Startex™ inner cover for extra moistureprotection Moulded high resilient polyurethane foam madewith Ultra-fresh™ anti-microbial Rear cushion radius and waterfall front edge Gently contoured to provide neutral leg position Moulded polymer insert for extra protection andshear reduction Unique waffled relief zone allowsimmersion in ischial area Designed to provide off-loading to hips andthighs for support and stability