Oka-H plus（Black）, Classic color ergonomic mesh chair rocking office chairs high density foam Mesh back with nylon back

Mesh back with nylon back frame + plastic fixed lumbar support

3) Fabric padded seat with injection molded foam inside + bottom plastic cover

Function: Standard S1 ultra-thin double-sided five-position five-hole socket

350mm chrome metal base + 55MM PU castors

6) Muti-functional mechanism with seat sliding & back reclining and locking at 3 positions functions

Oka-H plus（Black）, Classic color ergonomic mesh chair rocking office chairs high density foam Mesh back with nylon back1) High back ergomonic mesh office chair with 2D headrest & cloth hanger 2) Nylon 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) 3D armrest with soft PU armpad 5) Multi functional mechanism with back reclining & 3 positions locking + seat sliding function 6) BIFMA passed CLASS 3 gaslift 7) 350mm chrome metal base + BIFMA