Mid-back Mesh Chair with seat slider offers a breathable mesh back, height-adjustable lumbar support and upholstered cushioned seat to enhance your comfort. Multifunction arms adjust in height, pivot and go forward and backward. Soft, polyurethane arm pads slide into a position that suits your needs with four locking positions. Self-weighing, synchronized adjustment mechanism controls pneumatic seat-height adjustment and lets the back recline at a 2:1 ratio to the seat. Management chair also features 360-degree swivel, auto adjustable tilt tension and tilt\/tilt with four-position lock. Black, five-star nylon base is equipped with smooth-rolling, dual-wheeled casters for easy mobility. Weight capacity is 275 lb. Mid-back chair meets or exceeds BIFMA standards.