Materials: 1. Headrest: Heatless Korea Mesh (KM-13) 2. Backrest: PU leather 3. Seat: High elastic foam wiht fabric cover. 4. Castor: Black nylon castors. 5. Lumbar cushion: S shape fabric with sponge. 6. Armrest: PU cover Functions: 1. Mechanism: Manual-controled, multi-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 tension: Seatrest can be adjusted to user's ideal tension. 7. Headrest: Height adjustable. 8. Seat width: Width extentable.

