Improve your core strength and spinal health with the CAP Fitness 65cm Stability Exercise Ball. You can incorporate the ball in a variety of exercises to improve core strength, flexibility, posture, balance and muscle tone. Made to last and great for home use; incorporate this stability ball into a variety of exercise routines, including yoga, Pilates, cross-training, aerobics and more! Also great as an alternative to a chair while working at your desk or watching television, as the relative instability of the ball forces your abdominal muscles to work harder, giving you a low-impact ab workout that also helps improve spinal health and posture. The included air pump allows you to keep the ball at your desired level of inflation.