Vinyl Medium Bench Height Chair is adjustable from 21-28.25 inches from the top of the seat to the floor and features ergonomic adjustments including seat height and locking back tilt, locking seat tilt, chrome adjustable foot ring, and black, nylon-reinforced fiberglass base with dual-wheel, self-braking, non-marring casters suitable for hard floors in antibacterial/antifungal Sterling Supernova Vinyl.