LADY SITNESS DELUXE office swivel chair, flexible with 7 zones, black/blue. Supplied = flat pack. Cover material = polyester. Colour of covering = black, blue. Frame colour = black. Frame material = nylon. Seat mechanism = synchronous mechanism. Frame design = with castors. Height adjustment range = 410 - 500 mm. Type of arm rests = with arm rests. Back rest height = 600 mm. Seat depth = 420 mm. Seat width = 480 mm. Shape of seat shell = flat seat with knee roll. 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. Period of use/day = up to 8 hours. Product type = operator swivel chairs. Specially designed for female ergonomics. Height adjustable back rest with actively breathing mesh cover. Three dimensional dynamic seat. Pocket spring core, seven foam zones.