Blue Ridge Ergonomics PDHSO-RT-RC Black Polyurethane Desk Height Stool with Round Tube Base is adjustable from 19.75-25 inches from the top of the seat to the floor and features 360-degree, all-around control and black, powder-coated steel base with fixed foot ring and dual-wheel, self-braking, non-marring casters suitable for hard floors in chemical, soil, and puncture resistant polyurethane.