1. Material: PVC material 2. Dimensions: square: 48 x 48 cm, round diameter 38 cm 3. Concave-convex vent design, disperse the pressure on the buttocks, speed up the air circulation in the buttocks and thighs 4. The fabric is made of thick polymer PVC, breathable and comfortable in summer, not easy to sweat, and hard to harden in winter 5. There is a leak-proof rubber pad at the bottom of the inflatable nozzle, and a soft plug on the outside. The double-layer seal does not leak air 6. Fine stitches and good workmanship 7. Packing list: inflatable cushion + pump
