1. [ MEMORY FOAM] The donut seat cushion has the highest quality memory foam, no toxic rubber odor and the cover is removable, easy to wash and the bottom of the cover is made of elastic, non-slip material.2. [EASY INFLATION] Quick and easy inflation by mouth or with the supplied air pump. Other pillows are difficult to inflate and can cause shortness of breath. With our supplied air pump, you can always inflate your pillow quickly and easily.3. [SUPER COMFORTABLE] The ring shape distributes body weight evenly without putting pressure on the perineum to relieve pelvic, perineal and anal pain. The level can be varied to meet your individual needs. Just add varying amounts of air as you inflate the pillow to make it soft, medium, or firm.4. [EASY TO CLEAN] The cover of this pillow is made of polyester fibers which are hypoallergenic and can be cleaned to provide a safe and clean pillow for you. The built-in inflatable mouth, which is different from the metal mouth, prevents the patient from feeling uncomfortable using it.5. [Widely Application] - You can use the pillow at home, in the office, at work, on vacation, while traveling, in the car and on the plane. The ring pillow with pump fits in the included carrying bag so you can take it with you wherever you go. Please note: the color of the pillow and pump will be sent randomly. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.