Materials: 1. Backrest: Heatless Korea mesh(KM-10) 2. Seat: Heatless Korea mesh(KM-10) 3. Base: Polished aluminum star base. 4. Castor: Black PU castors 5. Lumbar cushion: Square shape fabric with sponge 6. Lumbar support: Chromed aluminum. 7. Armrest: PU cover Functions: 1. Mechanism: Manual-control Synchronized, multi-angle tilt lock. Backrest tension adjustable. 2. Lumbar cushion: Adjustable(up & down) 3. Seat height: Adjustable(up & down) 4. Armrest: Height adjustable, left and right twistable, forward& backward applicable. 5. Seat slide: Forward& backward slidable.
