Don’t let discomfort affect your productivity! The OCC drafting chair is a comfortable and lightweight chair that is highly mobile. It features contoured back and seat to help to relieve back-strain. It has pneumatic gas lift seat height adjustment to raise the seat from 26.5 inch to 31.5 inch. The large 27-Inch nylon base will provide greater stability. It is equipped with hooded double wheel casters, and optional glides can be used in place of casters to stop this chair from rolling. The OCC drafting stool comes with options of no arms, adjustable arms or loop arms.