Thera-Band® Exercise Ball. Increases flexibility and coordination. Helps develop core strength. Each ball includes replacement plug and adapter. High-quality, nonslip vinyl construction with latitudinal ribs for easier grasping. Weight-tested to hold up to 600 lbs. when properly inflated. Includes full-color poster featuring 24 exercises. Pump sold separatelyIncludes colored tape for accurate inflation measurement. Yellow 45 cm, 18" 4'7" - 5' (55" - 60") recommended patient height. Bulk ball with no packaging.