Office chair/mesh chair/swivel chair/office furniture: JS-7002 Manage chair Material: 1. Elastic mesh seat and backrest. (You can choose color accoding to our fabric board) 2. Plating alumium base. 3. Alumium foot and black nylon casters. 4. PU cover armrest. Advantage: 1. Lifting the handle at the lower right of chair seat can adjust the height of chair. The weight of the body will make the seat lower when Lifting up the handle. 2. Releasing the handle, the chair will stop at desired position. Lifting the handle without weight will male it rise. 3. Pressing the control button on the right side of the chair seat Will make the seat and backrest sliding at the same time. 4. Press the control button again, the office seat and backrest will be locked at the right position. 5. Lifting the handle at the lower left seat can adjust the reclining of the backrest. When the backrest was pressed by proper weight, the chair seat and the backrest can be sliding At the same time. 6. Lifting up the handle, the backrest can be locked at the desired position. Lifting up the handle again will unlock it, then the backrest can be reclined freely. Outer packing: 1pc/standard export carton Office chair: GT07-35B Manage chair: 1. Overall size(D*W*H): 51*65*114-120 CM 2. Shipping Size(L*W*H): 87*56*66 CM Material: 1. Elastic mesh seat and backrest. (You can choose color accoding to our fabric board) 2. Plating alumium base. 3. Alumium foot and black nylon 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 back