Materials: 1. Backrest: Black frame with black mesh. 2. Seat: High elastic foam wiht black fabric cover. 3. Base: Black nylon star base. 4. Castor: Black nylon castors 5. Armrest: Black plastic. Functions: 1. Mechanism: Manual-control, multi-angle tilt lock. 2. Seat height: Adjustable(up & down) 3. Backrest tension: Backrest can be adjusted to user's ideal ension.
