Mcombo Ergonomic Office Chair High-Back Computer Chair PU Leather Executive Task Desk Seat w/Metal Base 8117, Red&Black foam Comfortable Ergonomic Design --- High-back and full waist cushion is designed according to ergonomic. High-back Design --- Designed to fit the natural shape of the human back, providing comfort and support to the low back. Five-star plating foot can easy mobility and increase load-bearing capacity. Pneumatic Lift System adjusts the seat height to your personal preference. Highly Durable Construction - Made of iron, faux leather, nylon, plastic Color:Red&Black. Material:Faux Leather, Mesh Fabric, Iron&Nylon Frame. Foot Frame Material:Iron&Nylon Frame. Seat Dimension:20.7''(Width)x 19.7''(Depth). Seat Height(adjustable):20.3''-- 23.8''. Armrest Height:29.3''(Min)/32.7''(Max). Back Size:26.8''