AFS-TEX Active Balance Boards are the perfect ergonomic companion to standing desks. Stimulates gentle and controlled movement to exercise and strengthen the body core. Anti-Microbial anti-fatigue standing surface for improved comfort and hygiene. Improves posture, core strength and joint mobility for on-going wellbeing. Enhances concentration and productivity in your home or office. 20" x 14". 2 Year Limited Warranty This product ships in approximately 1 days