Class 100 Vinyl Medium Bench Height Clean Room/ESD Chair in Chrome is adjustable from 21.5-29 inches from the top of the seat to the floor and features ergonomic adjustments including seat height and locking back tilt, electro-static dissipating materials for proper grounding, locking seat tilt, 6-way adjustable arm rests, and cast-aluminum base with stationary, non-marring, ESD glides suitable for hard floors in ESD Vinyl.