【Ergonomic design】Helps relieve pressure on the hips or back and meets the doctor's treatment requirements, the ergonomic shape design can evenly distribute gravity. The soft material makes the body feel more relaxed when sitting. 【Variable Pressure Pump】The variable pump generates constant airflow and provides multiple levels of pressure for a customizable experience. The variable voltage pump is ultra-quiet, allowing you to sleep peacefully. Air pumps and air tubes are designed to shut off the air. 【The air pump and air tube are designed to seal in the air】When the buckle goes out, the buckle's air cushion closes and can hold air for 4-6 hours, allowing you to travel easily 【Comfort material】Made of medical-grade PVC nylon composite fabric, the seat cushion is made of medical-grade PVC nylon waterproof composite fabric, and the bottom is made of single Oxford cloth fabric. The materials are exquisite, the workmanship is exquisite, and the crimping is firm. 【Wide application】Anti-decubitus, breathable, can also widely meet the needs of sedentary people, and is very suitable for preventing bedsores in patients who are bedridden for a long time. Pressure relief pads are also suitable for wheelchairs, cars, offices, schools, etc.