I'm VERY impressed with this cushion. It inflates very quickly, especially if you use the (enclosed!) hand pump. Deflated, it's teeny and fits into a little bag (also enclosed!) that's easy to slip into your purse or carryall. It's just what you need if you experience lower back pain and sit at a desk all day. It redistributes your weight and keeps the pressure off of your tailbone or butt. While this isn't a use that they talk about, as I type this, I've got it against my back because it puts dual pressure at the base of my spine and under both of my shoulderblades. I've got it inflated to a firm pressure and it feels WONDERFUL. It's covered in a soft material that isn't all squeaky and sweaty like most donut pillows and it doesn't have sharp plastic seams like most do. The material keeps it from slipping but is still washable. It's very well made so I see getting a lot of use out of this. I'm surprised it's so inexpensive!
Dr. Frederick's Original Donut Cushion - 15" Inflatable Ring Cushion - Comfortable Medical Pillow for Hemorrhoid Treatement, Bed Sores, Coccyx & Tailbone Pain, Pilonidal Cyst, Perineal Pain, Pregnancy, Child Birth, Prostatitis and More - Great for Wheelchairs - Air Pump Included - Blue