Class 100 Vinyl Desk Height Clean Room Chair with Medium Back in Chrome is adjustable from 19-24 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 cast-aluminum base with chrome-hooded, dual-wheel, self-braking, non-marring casters suitable for hard floors in antibacterial/antifungal Carbon Supernova Vinyl.