RS1 executive armchair, with kneematic rocker mechanism, black. Supplied = flat pack. Cover material = leather, vinyl. Colour of covering = black. Frame colour = polished aluminium. Frame material = aluminium, brushed. Seat mechanism = rocker mechanism with counter weight adjustment. Frame design = with castors. Height adjustment range = 420 - 510 mm. Type of arm rests = with arm rests. Back rest height = 720 mm. Seat depth = 500 mm. Seat width = 550 mm. Shape of seat shell = contoured seat. Design of castors = castors for soft floors. Max. load = 110 kg. Period of use/day = up to 8 hours. Product type = office swivel chairs. Comfortable leather armchair with sports seat character. Back rest and contoured seat with moulded sides. Intricately stitched, white double seams. Adjustable kneematic rocker mechanism, can be locked in several positions. Designer aluminium five star base, polished.