Modern Adjustable Drafting Chair for professional and home offices, Transparent Black Mesh Back and Seat allows air flow for comfort, Mid-Back Design with Built-In Lumbar Support promotes good posture, 2-to-1 Locking Synchro Tilt Adjustment tilts the back and seat in unison for a comfortable seating position, Tilt Tension Adjustment Knob adjusts the chair''s backward tilt resistance, Waterfall Swivel Seat reduces pressure on your legs, Pneumatic Seat Height Adjustment provides a custom seating experience, Padded Flip-Up Arms relieve pressure from the neck and shoulders, flip up out of the way when needed, 5-Star Black Nylon Base with Dual-Wheel Casters and 19.5" Chrome Foot Ring, Swivel drafting stool with multiple adjustment ideal for long workdays in your home office or place of business