Reliance 5346 Stool – Heavy Duty Comfort Features Seat height range is 20″ to 27″ Five-legged, 19.75″ diameter base Circumference of the base exceeds that of the seat to maintain stability in the sit-stand position Pneumatic raising and lowering with continuous ring located underneath the seat The 5346 comes with an adjustable, tilted and upholstered backrest Available in a variety of upholstery colors Made in U.S.A.