Adjustable Seating Stool - Buoy Design- Graphite Fabric, Black

18" diameter upholstered cap Built-in handle - used to adjust height and easier to carry Plastic canister - easy cleaning and maintenance Pneumatic cylinder height adjustment - 5 1/2" range to fit all sizes Curved base - rocks to encourage active sitting 20 pounds Product Dimensions- 18 x 18 x 22.75 inches Buoy five inches of height adjustability and the freedom to wobble, swivel and tilt make buoy an instant classic. Grab this active seating stool and go when creativity demands portability, or stay put at your desk for high focus tasks. The stable design of buoy provides a comfortable seat while helping to improve posture, and the wobbling base helps to work out your core with greater ergonomics and long-term comfort than comparable office exercise balls. If you want a Modern take on active sitting that fits comfortably anywhere The workday takes you, you’ll love the sleek style and simple lines of turnstone’s modern take on a seat.