Detailed Product Description ZY-808ABack outer shell, in black, PP ZY-808BBack inner pad, in black, PPZY-808CSeat shell,in black, PPZY-808DSeat plywoodZY-808Mechanism(808 modle)ZY-035/036-1Armrest ( two modle armrest)ZY-PP-YG280Blcak PP Chair baseexports CasterBack inner cover(ZY-808E) dust proof coverGas spring( 100 grade 3 )plastic panel strip