Ergonomic computer chair Home sofa chair Office chair Comfortable sedentary lift study chair esports chair

1)  new material nylon
2)  back and seat: import hight elastic mesh
3)  Ratchet back, adjust the backrest up and down for three class
4)  aluminum armrest frame and 3D multi-function armrest
5)  three class locking,multi-function mechanism with the seat slider
6)  SHS 3 class gas lift
7)  350mm aluminum base pass BIFMA test
8)  60mm Chrome PU castor