Materials:
1.Backrest:Heatless Korea mesh(KM-13)                  
2.Seat:Heatless Korea mesh(KM-13)
3.Base:Polished aluminum star base.
4.Castor:Black nylon castors
5.Lumbar cushion:S shape abric with sponge.
6.Lumbar support:Polished aluminum.
7.Armrest:PU cover
Functions:
1.Mechanism:Wire-controled Synchronized, multy-angle tilt lock.
2.Lumbar cushion:Adjustable(up & down)    
3.Seat height:Adjustable(up & down)
4.Armrest:Height adjustable, left and right twistable.
5.Seat slide:Forward& backward slidable.
6.Seat pan tilting:Seat can be tilt up at 5 degrees.