This colorful, child-sized 38cm Balance Ball is a fun way to encourage kids to build a healthy posture, improve balance, and get the "wiggles out". The constant ball movements increase blood flow to the brain, leading to better focus. Ideal for ages 5-8 and includes an easy inflation pump. Not compatible with the Kids Classic Balance Ball Chair.  Child-sized 38cm balance ball. Specify Green or Orange. Includes an easy inflation pump.