Air Layer Cushion (43cm x 43cm x 7.5cm)Unit : Each Model : CUSH AIRLAYER 43 43 7. 5 The Air Layer cushion features a block of visco elastic foam that conforms to the buttocks, redistributing pressure and an 'air layer' to reduce heat transfer. Key Features PU multi stretch Water resistant White inner substrate 270 zip with protective flap Features The cover is PU multi stretch, water resistant and vapour permeable with welded seams, a 270 zip with protective flap Top cover has a white