Material: plush + PVC liner Size: inner diameter 10 cm, outer diameter 38 cm Color: dark blue, light brown, gray Recommended for: prolonged sitting / bed sores / coccyx fracture / tailbone pain / pelvic floor pain / pregnancy Package content: 1 * inflatable cushion, 1 * pump P SUPERIOR CUSHIONINGOur seat cushion is an excellent cushion for hemorrhoids; pregnancy donut pillows; Donut pillow for coccyx problems; and medical donut pillow. You can take it anywhere.2. COMFORT & DURABILITY: Soft and durable plush + PVC liner material conforms to your body and provides excellent cushioning while resisting punctures and leaks. Holds weight up to 198 lbs. 3. AS EASY INFLATION: Quick and easy inflation by mouth or with the included air pump. Other pillows are difficult to inflate and can cause shortness of breath. You can always inflate your pillow quickly and easily with our included air pump.4. EASY TO CLEAN: The cover of this pillow is made of polyester fiber, which is hypoallergenic and can be cleaned to provide you with a safe and clean pillow. The built-in inflatable mouth, which is different from the metal mouth, prevents the patient from feeling uncomfortable to use it.5. MULTI USE: This pillow is perfect for traveling. The complete set fits into the included carrying case, so you can take it with you wherever you go You can use it at home, office/work, vacation, car and plane.