Strengthen your core, improve your flexibility, and practice balance with the Thera-Band Exercise Balls. Available in five sizes to fit users from 4 feet, 7 inches tall to 6 feet, eight inches tall, the Thera-Band Exercise Ball is ideal for physical therapy, yoga, Pilates, and/or for general core strength training. The Thera-Band Exercise Ball comes with a guide poster detailing 24 exercises to help you get started, as well as two plugs and an inflation adapter. The ball can be inflated with a standard pump (not included). Using an exercise ball for training develops core strength and flexibility to help keep muscles and joints functional and safe from injury. With exercises as simple as sitting on the ball and bouncing lightly, core strength is developed as your body must continually find and maintain balance. Exercise balls also help you find and maintain a neutral lumbar spine position helping to ease lower back pain and develop better posture. From merely sitting on the ball, to doing structured aerobic and strength exercise routines, exercise balls can be used in many, many ways that support healthy fitness habits.