NET-MOTION office swivel chair, with mesh back rest and lumbar support, black back rest and seat, chrome plated frame. Supplied = flat pack. Cover material = polypropylene. Colour of covering = black. Back rest colour = black. Frame colour = polished chrome. Frame material = aluminium. Frame design = with castors. Height adjustment range = 465 - 560 mm. Type of arm rests = with arm rests. Back rest height = 560 mm. Fittings = counter pressure setting, lumbar support. Seat depth = 420 mm. Seat width = 455 mm. Shape of seat shell = ergonomic seat. Conforms to = DIN EN 1335 part 1 - 3, DIN EN 12527+DIN EN 12529. Design of castors = castors for soft floors. Max. load = 110 kg. Product type = operator swivel chairs. Seat depth adjustment. Back rest with lumbar support. Rated best product by an independent product testing institution*. Swivel chair with height and width adjustable 3D arm rests, synchronous mechanism with locking mechanism for 5 positions, seat depth adjustment 400 - 460 mm, back rest with black net and height adjustable lumbar support, chrome plated back rest, polished aluminium five-star base. Wheels for carpeted floors as standard. * Issue 02/2017 of test magazine, published by Stiftung Warentest. Supplied flat pack - easy self-assembly.