The ball chairs are a unique seating option that encourages movement throughout the day and may help support better posture and balance. This ball chair is covered in vinyl fabric and also has four legs with stationary glides to provide extra stability during movement. The legs are powder coated for long-lasting durability. Fully inflated, seat height is 23" and will lower when occupied. Great for use as a desk chair, in waiting rooms, meeting spaces, classroom or home for an alternative chair that allows for dynamic movement. Pump included with ball chair. Color: Black Material: Durable Polyester Fabric Features: - Finish: Black - Material: Steel and Polyester Fabric - Anti-burst 17 1/ 2" exercise ball with vinyl fabric cover and legs to create a unique ball chair - Four powder coated legs and stationary glides for stability and durability - Great alternative desk chair or for use in meeting areas, gathering spaces, waiting rooms or classrooms - Supports movement and may help encourage better posture and balance - With a fully inflated ball, seat height is 23" and will lower when occupied - Pump included with ball chair - The products are designed to promote active movement throughout the day and engage major muscle groups to help combat the negative effects of inactivity in the office - DIMENSIONS. Overall (Leg Option): 23"H x 22-1/2"D x 22-1/2"W. Overall (Feet Only Option): 20"H x 17-1/2"D x 17-1/2"W. Product Weight: 15 lbs. Maximum User Weight Capacity: 250 lbs. Manual pump included. Specifications: - Product Weight: 15 lbs - Product Dimensions: 23" H x 22.5" W x 22.5" D - Recommended Location: Indoor - Recommended Room: Office