Purple SHIMA wheelchair cushion provides a comfortable seating experience. Size when in use: Approximately 40cm wide x 40cm deep x 6cm thick Weight: Approximately 450g Made of a non-membrane material, it has excellent breathability and water permeability, allowing the cover to be hand-washed. The cover is easily removable. It has a two-layer structure with a low-resilience cushion to distribute body pressure and a high-resilience cushion to stabilize the body. The bottom of the cushion has a non-slip treatment. ＜Materials＞ Inner material: [Top] Low-resilience urethane, [Bottom] High-resilience urethane Cover: Polyester [Non-slip silicone treatment on the bottom]