U1BM-V2DD26

backrest:Mesh adjustable backrest(PA+GF) with ABS decoration cover(transparent) 

Lumbar:optional fixed lumbar,extra USD1.5

Arm:4D(up&down armrest with PU sliding,swivel,left&right armpad) nylon armrest

Seat:fire retardent molding foam, fabric, 16mm plywood, plastic cover 

Mechanism:synchronize tilting and 3 angle locking(BIFMA 5.1)

Gaslift:Class 4 gaslift

Footbase:Nylon base (d=680mm); PU castor(d=60mm)   

non-artificial damage, warranty: 5 years