The LowZone 18 x 18 inch Pressure Relief Cushion is a durable and reliable accessory for electric powerchair and wheelchair users. Made by Sunrise Medical and compatible with Quickie products, this black cushion provides pressure relief for optimal comfort during long periods of use. Perfect for any wheelchair model, this unit includes one cushion to support and enhance the mobility experience for individuals seeking improved health and beauty while on the go. Waterproof material Used. good condition, has small rip on the surface. Fixed with tape. pls see images