Medium Executive Chair Frame Is Constructed From A Combination Of PA (Polyamide) And Gf (Glass Fiber), Equipped With 50-density Molding Foam For A Supportive and Comfortable Seat, Adjustable PU (Polyurethane) Lumbar Support, 3d Move Armrests For Versatile Arm Support, Tilt Mechanism With A Butterfly Design, Offering 4 Locking Positions For Customizable Reclining, Supported By A 340mm Nylon Base, 60r Black Nylon Castors (Wheels) For Smooth Mobility, Height Can Be Adjusted Using A 100mm Black Class-3 Gas Lift. Color: Black Check out our latest executive chairs