SITNESS 40 swivel chair, vinyl cover, white. Supplied = partially assembled. Cover material = vinyl. Colour of covering = white. Frame colour = chrome. Frame material = steel. Seat mechanism = 3D Sitness seat joint. Frame design = with castors. Height adjustment range = 430 - 510 mm. Type of arm rests = without arm rests. Back rest height = 200 - 300 mm. Seat depth = 400 mm. Seat width = 440 mm. Shape of seat shell = orthopaedic seat. Design of castors = soft castors for hard floors. Max. load = 110 kg. Period of use/day = up to 6 hours. Product type = office swivel chairs. Adjustable back rest. Orthopaedic seat with Body-Balance-Tec pivoting joint. Seat height adjustment. Steel five star base, chrome plated. Hard floor castors. Versatile functional swivel chair with height and depth adjustable, ergonomic back rest to promote a healthy posture. Fitness orthopaedic seat and Body-Balance-Tec pivoting joint for three dimensional dynamic movement of the seat and back rest surface. Infinite