Steven-H (Adj.armrest),Upgrade adj. armrest high back 2D lumbar support office chair double lumbar support 8) 340MM nylon base &

8) 340MM nylon base & 55MM nylon castors

Function: door with Push To Open System Rebound Device

with seat sliding function7) BIFMA passed CLASS 3 gaslift8) 350mm black color nylon base with BIFMA passed 60mm PU nylon castorsChange to aluminium base +$5

2D lumbar support

7) BIFMA passed 340MM nylon base & BIFMA passed 50MM PU nylon castors

Steven-H (Adj.armrest),Upgrade adj. armrest high back 2D lumbar support office chair double lumbar support 8) 340MM nylon base &1) High back ergonomic mesh office chair 2) Mesh back + black PP with fiber back frame + height adjustable headrest + 2D lumbar support 3) Fabric padded seat with high density foam inside 4) Height adjustable armrest 5) Multi functional mechanism with back reclining & one position locking function 6) BIFMA passed CLASS 3 gaslift 7) 350mm chrome metal base with 60mm castors