GT07-39 Executive mesh chair: 1.Overall size(D*W*H):51*65*114-120 CM 2.Shipping Size(L*W*H):87*56*66 CM Material: 1.Fine-structure net upholustry with leather headrest. 2.Polished aluminum base. 3.Aluminum feet, black nylon and glass-fibre casters. 4.PU cover armrest. Function: 1.Right handgrip adjust seat height. 2.Left handgrip adjust backrest. 3.Level under left seat side can adjust the seat forward and backward. 4.Armrest can up and down,also inside and outside twist. 5.Lumbar support can up and down. 6.Button on the either side of back frame can adjust the angle of backrest 7.Adjustable headrest