Oka-H, Boss executive black high back mesh office chair sillas de oficina with 2D lumbar support adjustable armrest ergonomic chairs height adj. des 6) 350mm aluminium base with

6) 350mm aluminium base with BIFMA passed 60mm PU nylon castors

3) SEAT: Fabric padded seat with high density foam inside 4) ARMREST: 3D armrest 4) GASLIFT: BIFMA passed CLASS 3 chrome gaslift5) MECHANISM: Muti-functional mechanism with back reclining and locking at 3 positions function

5mm thickness butterfly tilt&lock mechanism6) BIFMA passed CLASS 3 gaslift7) 320mm black PP base + BIFMA passed 50mm PU nylon castors

3) 200# BIFMA passed CLASS 3 gaslift + φ400mm chrome metal foot ring

2) Mesh back + 2D lumbar support & nylon back frame & 2D headrest

Oka-H, Boss executive black high back mesh office chair sillas de oficina with 2D lumbar support adjustable armrest ergonomic chairs height adj. des 6) 350mm aluminium base with1) High back ergomonic mesh office chair with 2D headrest & cloth hanger 2) Mesh back + nylon back frame +2D lumbar support ( botton with three colors for options, black blue red) 3) Fabric padded seat with injection molded foam inside + plastic cover 4) Height adjustable armrest with soft PU armpad 5) Multi functional mechanism with back reclining & 3 positions locking function 6) BIFMA passed CLASS 3 gaslift 7) BIFMA passed 340mm nylon base + BIFMA