Zenergy ball chairs are a unique seating option that encourages movement throughout the day & may help support better posture & balance. This ball chair has four legs with stationary glides to provide extra stability during movement. The legs are powder coated for long-lasting durability. Great for use as a desk chair, in waiting rooms, meeting spaces, classroom or home for an alternative chair that allows for dynamic movement. Designed with a 17.5" (anti-burst) exercise ball. Fully inflated seat height is 23", height will lower when occupied. Pump included. Vinyl. Recommended Application Area(s): General Office & Task; Guest / Reception & Lounge; Specialty; Seat Color: Black; Color Family: Black; Arms Included: No.