Active Seating Stool, 12-24 Inch Height, BlueThe Active Tilt Stool from Storex adjusts from 12 to 24 inches to fit users and work surfaces of any height. The curved base provides a 12. 5 range of motion that encourages movement, reduces stress and breaks the monotony of the traditional office chair. Adjustable seat height of 12 to 24 Inches, in 2 inch increments Tool free assembly; No pistons or moving parts Angled base for improved posture, balance and stability Use at table height, counter