Exercise Ball Chair (Multiple Sizes) For Fitness, Stability, Gym, Balance & Yoga - Professional Quality Anti-Burst Extra Thick Fitness Ball - Great for Pilates, Abdominal Workout and Office Chair. PROFESSIONAL GRADE HEAVY DUTY ANTI-BURST RATING The toughest ball on the market, manufactured to hold up to 2000lbs of static weight. It will hold any heavy weight, and it can be used for Weight Training Yoga Therapy Pilates Gym Fitness and for Pregnancy, Labor & Birth Tested SIZE OPTIONS - 55 cm (5 to 5 6 tall) 65 cm (56 to 6 tall) and 75 cm (6 to 6 5) and 85cm (6 5 or taller) HOME OR OFFICE USE - This premium exercise Swiss ball makes working out more effective. Use it for yoga, Pilates, stretching and more! FREE FOOT PUMP INCLUDED so you can add air and inflate without the risk of bursting the ball. Using your own foot pump assures the ball is inflated to correct size and you can add extra air when you need the balls to be firm BEST NO-HASSLE FREE REPLACEMENT GUARANTEE covers a full year manufacturer warranty.......We got your back!!