Black Polyurethane Medium Bench Height Chair with Medium Back is adjustable from 19.25-26.75 inches from the top of the seat to the floor and features ergonomic adjustments including seat height and locking back tilt, chrome adjustable foot ring, locking seat tilt, and black, nylon-reinforced fiberglass base with dual-wheel, self-braking, non-marring casters suitable for hard floors in chemical, soil, and puncture resistant polyurethane.