The Safco Active Zenergy Exercise Ball Chair is a comfortable and ergonomic seating option. The ball chair is made from steel and polypropylene that enhances its strength and durability. This exercise ball chair includes a pump to inflate it whenever needed. It is anti-burst and has a mesh cover for added functionality. The chair provides movement that helps you sit comfortable and supports better posture and balance. It has powder coated legs and stationery glides. The ball is covered in brightly colored mesh or black vinyl for added comfort and relaxation.