New choice high back ergonomic mesh office chair

1) High back ergonomic mesh office chair & 2D headrest
2) Mesh back +  black PP with fiber back frame + adj. lumbar support
3) Fabric padded seat with injection molded foam inside + plastic cover
4) V-shape fixed PP with fiber black armrest 
5) 2.5mm thickness butterfly tilt&lock mechanism 
6) BIFMA passed CLASS 3 gaslift
7) 330mm PP base & BIFMA passed 60mm nylon castors