Smile Mart Steel Managers Chair with Adjustable Height & Swivel, 220 lb. Capacity, GrayGet extra comfortable in the SmileMart Adjustable Mesh Swivel Office Chair with Armrests. This easy assembly, the sturdy office chair is perfect for long workdays. In this rendition of our office chair, we have increased the seat size and cushion for optimal comfort. The small lever under the cushioned seat allows you to adjust and customize the chair to your perfect seat height. Featuring a densely knitted mesh backrest, this mesh office chair allows better airflow, accelerating heat, and moisture dissipation. The mid-back design supports your spines natural curve and protects your lower and middle back as it prompts you to sit straight. The chair material is comprised of steel, iron, PP, nylon, mesh, foam, nonwoven fabric, and composite boards. Our chair comes with a user manual, and please for your safety do not stand on this chair. This is a basic mesh chair, and the backrest is only for supporting your back while sitting. It is not suitable for people to lean back too far, otherwise, the backrest might be cracked.Smile Mart Steel Managers Chair with Adjustable Height & Swivel, 220 lb. Capacity, GrayMaterial: PP, steel, iron, nylon mesh, foam, non-woven fabric, composite boardsN.W.: 20 lb.Packing list: 1 x mesh office chair, 1 x user manualRecommended user weight: up to 220 lb.G.W.: 22.9 lb.Adjustable seat height: 13.2 17.1Seat size: 20.7 L x 20 W x 2.8 thicknessNote: For your safety, please do not stand on this chairOverall dimension: 23.8 L x 23.6 W x (34.8 38.8) H