PLEASE NOTE THIS ITEM CANNOT SHIP VIA 3 DAY DELIVERY. Strengthen, stretch and tone all major muscle groups Enhance balance and coordination Gently ridged surface improves grip Slow Air Release version, if punctured, deflates more slowly Include inflatable Fitness Ball, air pump, easy to follow instructions and illustrated exercise guide 500 lb. static weight capacity Latex free Green Small 55 cm Recommended ball size for patients 5'1' 5' 6'