●UNIQUE AND EFFECTIVE WORKOUTS: Combines elements of cardio, strength, and flexibility into unique and highly effective workouts ●STRENGTHENS MUSCLES: 26-inch ball increases the difficulty of workouts and builds strength faster by forcing the engagement of more muscles; Forces you to maintain your center of gravity while performing any exercise ●IMPROVES PERFORMANCE: Improves flexibility, endurance, strength, and ability by performing versatile workouts ●PHYSICAL THERAPY: Ideal piece of equipment for rehabilitation and physical therapy with the unstable surfacing ●SPECIFICATIONS: Includes a guided workout and easy-to-use inflation pump; Made with strong, non-slip, non-marking burst-resistant material and can support up to 350 pounds