Non-roll away weighted balance ball offers a flexible chair for school and home, enabling increased focus and improved performance. Stays in place – Reduces fidgeting and increases concentration with an original weighting feature that keeps it in place when not in use. Increase focus – Keeps the mind engaged as the constant ball movement increases blood flow to the brain. Stress relief – Improves performance by providing an outlet for excess energy, alleviating anxiety, stress, and boredom. Improves posture – Builds core strength and a healthy posture. Latex-free materials. Includes pump, two stoppers, measuring tape, and a stopper remover.Details:Purple balance ballMeasures 21.65" (55 cm)Non-roll weighted balance ball chairLatex-free, durable PVC constructionSmooth matte surface for comfort and gripContents:1 balance ballPump2 stoppersMeasuring tapeStopper remover