CalCore Exercise Ball Base - Yoga Ball Base for Workout, Balance Ball Chairs & Fitness - Portable Fitness Ball Stand Fits 55cm, 65cm, 75cm and 85cm Balls STAY-IN-PLACE DESIGN - Use your yoga ball base to keep your exercise ball chair from rolling around the office or home gym. This fitness ball stand is perfect to both store and use with your exercise ball. USE WITH WEIGHTS AND FITNESS BANDS - Fitness band channels work seamlessly with resistance bands (not included) and give you access to a full body workout. WORKS WITH ALL SIZES OF EXERCISE BALLS - Fits all ball sizes including 45 cm, 55 cm, 65 cm, 75 cm and 85 cm balls. Perfect for physical therapy, Swiss ball training or even pregnancy exercises. SUPPORTS UP TO 2000 LBS - Rugged ball stand design will support exercise balls loaded with up to 2000 lbs. LIFETIME WARRANTY - CalCore Workout Ball Bases are warranteed for life.