Description: Features: PVC material, comfortable and breathable, durable Combining with aerodynamic principle, various air hole design, dry and comfortable as well as breathable, accelerating air circulation, timely distribution of heat. Distribution of body pressure, so that you can sit more comfortably. PVC inflatable hole and inflatable bag are designed with thermal synthesis technology. It is suitable for sedentary office white-collar workers, long-driving people, patients with tail pain and hemorrhoids patients.