Black Polyurethane Serpent Sit-Stand Desk Height Stool in Chrome is adjustable from 17.5-22.5 inches from the top of the seat to the floor and features ergonomic adjustments such as seat height, handle for ease of movement, and locking seat tilt and cast-aluminum base with stationary, non-marring glides suitable for hard floors in chemical, soil, and puncture resistant polyurethane.