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, 6-way adjustable arm rests, and black, nylon-reinforced fiberglass base with dual-wheel, self-braking, non-marring casters suitable for hard floors in antibacterial/antifungal Storm Supernova Vinyl.