Rejuvenation Complete Support and Stability Ball is designed to provide a comfortable, supportive, and stationary surface for you to exercise. The professional level burst-resistant exercise ball is a versatile tool that allows you to exercise and stretch your entire body while engaging stabilizer muscles that often go unused. This fosters improved functional strength, balance, and flexibility of your body which can aid in preventing injury and increasing energy. The weighted filler keeps the ball in place; it will not roll around the gym or at home. About Pivotal 5 Pivotal 5 is an innovative leader in handheld fitness products. Formed in Chicago in 2002, the company uses its unique relationship with industry and research partners to deliver the best in cutting edge product development. Pivotal 5 targets a variety of fitness needs for the home and gym, all while using materials and manufacturing techniques that are safe for our environment. * Latex free construction * Works a variety of muscle groups * Weighted filler keeps ball in place * Burst resistant * Includes instruction chart