Update your workstation with the Interion Polyurethane Task Stool with Adjustable Arms. Ideal for extended sitting periods this adjustable stool helps fight fatigue with a contoured seat seat back and a wide variety of adjustments. The seat is designed to withstand heavy duty use in tough working environments such as warehouses manufacturing facilities assembly lines and industrial work areas and includes a waterfall edge to improve blood circulation to the legs. Height-adjustable arms help improve the user’s posture. Ergonomic adjustments of this work stool include independent seat and back tilt 38 inch to 48-1/2 inch back height-adjustment 22 inch to 32-1/4 inch pneumatic seat height adjustment and 2 back depth-range adjustment. Seat measures 18-1/2 inchW x 18 inchD. Back measures 16-1/2 inchW x 13 inchH. The 5-blade base with casters provides stability and mobility while nylon floor glides are included for those working in stationary applications. Easy Assembly.