ExtraErgo Ergonomic Stool - Black

This ExtraErgo Ergonomic Stool, which compresses slightly to allow continuous small movements, lets you rock gently in any direction to help build strength and flexibility, stimulate circulation, send oxygen to the brain and improve concentration while strengthening your muscles. Engaging colors and unique design is more stable than a ball. ErgoErgo allows for greater fluidity of motion, doesn't deflate or roll away and doesn't collect debris like hair or dust off the floor. The durable plastic construction with a weight limit of 250lbs. 20.5h x 19.5w inches. Black.