HELPS KEEP YOUR BODY MOVING. Safco Zenergy Swivel Ball Chair leans, bounces and spins 360 degrees for an active seating experience that encourages good posture, core muscle strength and may help increase concentration. HELPS PROMOTE BETTER POSTURE. Designed with a rubber-molded anti-skid base for use on all floor types, it offers the posture benefits of a yoga ball without the rolling. It helps promote movement by leaning, bouncing and swiveling during your workday. LOW PROFILE DESIGN. Weighing only 13.5 lbs., this anti-burst swivel ball chair supports up to 250 lbs. Its low profile design allows it to fit neatly under work surfaces when not in use. PRODUCT DIMENSIONS. Overall dimensions: 17 1/2"H x 17 1/2"D x 17 1/2"W. Weight capacity: up to 250 lbs. Pump included with ball chair. APPLICATIONS. Perfect for use in collaboration spaces, lobby areas, schools, yoga studios, fitness centers, meeting rooms, and personal workspace as an alternative to standard chairs.