SOFT SITNESS ART office swivel chair, synchronous mechanism, with arm rests, black. Supplied = partially assembled. Cover material = polyester. Colour of covering = black. Back rest colour = black. Frame colour = black. Frame material = plastic. Seat mechanism = synchronous mechanism, 3D Sitness seat joint. Frame design = with castors. Height adjustment range = 440 - 520 mm. Type of arm rests = with arm rests. Back rest height = 560 mm. Fittings = lumbar support. Seat depth = 460 mm. Seat width = 440 mm. Shape of seat shell = contoured seat. Conforms to = EN 1335 1-2. Model = with mesh back rest. Design of castors = castors for soft floors. Max. load = 110 kg. Period of use/day = up to 8 hours. Product type = office swivel chairs. Moving seat due to Soft Sitness technology. Mesh back rest with new padding technology and with height adjustable lumbar support. 100% recyclable - owing to the use of single grade plastics. Including arm rests with an adjustable height and width with soft pa