This multipurpose tool provides firmness and flexibility while it molds to the body. The air inside keeps the user moving with slight micromovements so it builds and supports the area. An adjustable valve allows for airflow control, making it suitable for all body sizes and useful for a range of activities. Made from Torflex, a soft, latex-free medical grade PVC. Includes instructional manual with 94 illustrated strength and flexibility exercises and DVD. Color: Blue. Dimensions: 13" L x 12" diameter. Wt. 1 lb.