Carex Vinyl Inflatable Cushion is a durable heavy usage cushion that naturally conforms to body contours. The Inflatable Ring is great for anyone suffering from pressure sores, pressure ulcers, or skin ulcers. The rubber ring utilizes a special valve designed for easy inflation and is constructed from top quality rubber. The unique design provides all day comfort and pain relief while the user is in a seated position. Great for individuals suffering from coccyx problems and pressure sores.