chair:PUcoated armrest, lie mechanism,60mm gas spring ,350mm nyloncoated base,nylon caster office chair:s-229PACKING SIZE;80cmD×34cmW×64cmH20GP/40GP/40HQ:Overall size:73cmW×68cmD×113cmH-121cmH;Seat size:52cmW×53cmD×9cmT;Back size:52cmW×78cmH×9cmT;Seat height:47cmH-57cmH Office Chair:S-223