Why Choose EmoobinInflatable Donut CushionThe comfort donut cushion has the following unique characteristics: Improved pump size for easy, fast, and convenient pumping Redesigned valve can be tucked inside and lasts longer Modified inner size relieves pressure when sitting Soft outer cover is rubber-free to prevent sensitivity issues Enhanced design voids sound with increased movement Effortlessly deflated with the use of just two fingers Donut cushion with the size15 (38.1cm) comes complete with a pump for easy inflation. DURABILITY: Compared to rubber ring cushions, The Original Donut Cushion is made from a super durable nylon PVC with a flannel flocking, which is more resistant to temperature, sunlight, drying and cracking. Recommended for: Prolonged Sitting Bed Sores Pressure Sores Decubitus Ulcers Fractured Coccyx Tailbone Pain Perineal Pain Pilonidal Cyst Pelvic Floor Pain Chronic Pelvic Pain Syndrome (CPPS) Hemorrhoids Hemorrhoid surgery Pregnancy Child Birth Episiotomy Anal Fissures Anal Tearing Anal Surgery Rectal Surgery Perineal Surgery Prostatitis Prostatectomy Prostate Biopsy Vaginal Surgery Package contents: 15 Inflatable cushion *1 pump*1 Note: Because the outer layer is made of cloth, it should not be inflated enough (too easy to explode or to break the cloth).