*Mid back chair *Certificated high elastic mesh by fire retardant of CA TB117-2013 for back *Certificated high elastic fabric by fire retardant of CA TB117-2013 for seat *Basic water proof fabric for seat *Seat is molded foam, certificated by CA TB117-2013 * Class 4 gas lift (Top Class in the world) *Arms-Fixed PP arms in nice square shape *Mechanism-Multifuction mechanism in 4 locking positions, can adjust tilting easily *Sliding seat *Base-350mm nylon base with BIFMA quality *Castors-diameter is 60mm, Abrasion resistance
