Discover how much fun workouts can be with our Self-Guided Stability Ball. We make it easy with six common exercises, including illustrations and instructions, printed right on the ball. Do moves like sit-up twists, kick-back lunges and back extensions to enhance your core, activate leg muscles and strengthen your back. It comes with an easy-inflation pump for just the right resistance. Self-guided 65 cm stability ball Easy-to-follow visuals for best results Strengthen back, core, legs and arms Includes easy-inflation pump Measurements: 65cm. Height: 5’6″-5’11”. Weight Capacity: 300 lbs. Note: this ball will not fit in the classic balance ball chair.