Headrest: pp material + mesh Seat back: pp material + mesh Seat: Construction board + recycled cotton + mesh cloth Fabric: Mesh, native cotton + recycled cotton Tray: 17 trays Armrest: nylon armrest Gas rod: 2 grade 100mm electroplated gas rod Feet: electroplated feet Wheels: nylon wheels The air lever with 80mm stroke is used, and the height of the chair can be 114-122CM; The backrest can be adjusted: the tray can be used, and the angle of the backrest can be 360 rotation The air rod has passed SGS certification, the mesh back to back is comfortable and breathable, and it is not hot to sit for a long time. The backrest streamline shape closely fits, comfortably supports the waist and neck, adjustable headrest to relax the head