Inflatable Seat Cushion: Made of 30D nylon & TPU, waterproof, wear-resistant, air-leakproof and easy to clean-reliable for long outdoor use. 5cm thick when fully inflated, multi-point welding ensures even air distribution for stable hip support; round edges fit various seats. Lightweight (2oz), folds to palm size with a hanging loop for easy carrying on hiking/camping. Silicone case doubles as air pump: press to inflate, valve center press to deflate. Ideal for outdoor activities & indoor use! 10.62" L x 14.96" W