Designed to stimulate the lower body while sitting to increase the body's metabolism, increase blood flow and reduce fatigue. The Dynamic's unstable design rolls and wobbles underfoot meaning you have to keep it under control. Reduces the negative effects of sedentary behavior by keeping the legs and ankles moving while sitting at your desk. Studies show that people who fidget when sitting can burn up to 350 more calories a day. Easily stored under the desk when not in use. Ideal for both office and home use to reduce the negative effects of excess sitting. Contains an active antimicrobial additive for product protection.