Feature:1. Comfortable: Cushion fabric is made of thick PVC, which is breathable and comfortable in summer and is not easy to sweat, and it is not easy to harden in winter.2. Tightly Closed: The air nozzle is tight and does not run out, there is a leaking proof rubber pad at the bottom of the cushion, and a soft plug on the outside, double protection.3. Breathable: Concave convex vent design, disperse the pressure on the buttocks, speed up the air circulation in the buttocks and thighs, and make it more comfortable to use.4. Multi Purpose: Portable chair cushion is suitable for office chairs, wheelchairs, travel, cars, airplanes, coccyx sciatica is very suitable, and effectively relaxes the buttocks.5. Relieve Pressure: The air layer in the cushion can effectively eliminate the pressure of soft tissues and ensure that the body weight is evenly distributed without putting pressure on the waist.Specification:Item Type: CushionProduct Material: FlockingProduct Diameter: Approx. 38cm/14.9in.Package List:1 x Cushion1 x InflatorNote:Manual measurement, please allow 0.40.7in error.