... mechanism 4) 4D non-button adjustment armrest • Product Features ModelEC02H-MG MaterialMeshFrame colorPolishing aluminum base, polishing mechanism, grey frame color.HeadrestHeight ... / Leather/ Mesh back, fabric seat/ Mesh back, leather seat EC02H-MG (Mesh)↓EC02H-FG (Fabric)↓EC02H-LG (Leather)↓EC02H-MFG(Mesh ... )↓ Modern design ergonomic mesh office chair, hot selling product [EC02H-MG]