Improve your strength and condition your body with the STOTT PILATES® Toning Balls. Not only is this toning ball great for rehabilitating joints and muscles in your body, but it helps improve your leg muscles and increases your speed and strength. With a comfortable grip, it can be just as efficient as weight training. Add intensity to your strength-training and body-sculpting workout. FEATURES: Pair of toning balls for workouts Soft-weighted with a comfortable grip Strengthens and streamlines your body Adds intensity to your workout Rehabilitates joints and muscles Improves leg muscles Increases speed and strength