Includes ball and hand pump. Compact, lightweight and easy to transport. Plastic frame. Ergonomic seating combines the benefits and exercise fitness ball and the rolling base. Ball size: 14.56 in.. Weight limit: 150 lbs.. 19.7 in L x 18.5 in. W x 23.2 in. H (27 lbs.). Promotes active sitting while strengthening the back and improving posture. Great alternative to traditional chair.