Tonus Elast Abdominal Air Belt provides moderate support and compression to abdominal muscles weakened by strain without restricting breathing or muscle redevelopment. Types of abdominal strains are defined as a mild injury to the abdominal muscles resulting from trauma, overuse, pregnancy, inactivity, or surgeries such as cesarean, liposuction, or hysterectomy. Made of ventilated knitted cotton elastic band. Belt height is 10". Measure at waist to determine size in inches: XS 25-29, S 30-33, M 33-37, L 37-41, XL 41-45, XXL 45-49.