Work4U-MC-ZY002 Breathable Ergonomic Mesh Office Chair, Computer Chair, Desk Chair, Task Chair with Adjustable Tilt Tension & Built-in Lumber Support , Orange & Black High standard back Mesh & Sandwich thick Seat Mesh to prevent body heat and moisture build up With built-in lumbar support, pneumatic seat height adjustment Adjustable armrest, high quality 350mm chrome Base and 50mm Nylon Casters Thick mesh seat and premium fabric upholstery to eliminates leg fatigue Weight capacity is 250 pounds