Ergonomic Design: The product comprises 1pcs blue pressure relief cushion with 1 inflation pump, which is carefully designed to fit the natural curve of the buttocks, Which can prevent the development of pressure sores and to alleviate lower back pain and tailbone discomfort. It is approximately 41 cm x 41 cm in size. 16 Ventilation Holes: The Inflatable Cushion has a design of 16 circular centre holes, which help to evenly distribute weight, relieve hip pressure, promote air circulation and ensure breathability, reducing the risk of pressure sores. It's perfect for patients with pressure ulcers or who are bedridden long term. Materials: Square Pressure Cushions are made of high-quality PVC, with a surface flocking, soft and wear-resistant, sturdy and durable, and can withstand up to 980N of pressure. The material is breathable and absorbs sweat, so you'll be comfortable even if you're sitting down for a while. Easy Inflation and Easy to use: Seat air cushion with additional air pump. The pressure relief cushion is a breeze to use. Just pinch the bottom of the air hole and inflate it to 70% for maximum comfort, ensuring you sit comfortably wherever you go. Versatile Use: The Pressure Sore Cushion is great for use on chairs, wheelchairs, beds or benches. And It's also suitable for most people, including pregnant people, drivers, office workers, and those who sit or lie down for a long time, or It's perfect for long-term bedridden patients to prevent pressure ulcers.