BALANCE 10 stool, with orthopaedic seat, 350 mm, royal blue. Supplied = flat pack. Seat height = 420 - 550 mm. Seat diameter = 350 mm. Seat material = polypropylene. Seat colour = royal blue. Type of height adjustment = gas spring with release ring. Frame design = with castors. Frame material = plastic. Frame colour = black. Foot plate diameter = 600 mm. Seat design = round seat. Max. load = 110 kg. Design of castors = castors for soft floors. Period of use/day = up to 4 hours. Product type = office stools. Seat with Body-Balance-Tec joint. Height adjustable using release ring. Large plastic five star base, black. Seat with Body-Balance-Tec seat joint. Seat 350 mm, 100% polyolefin cover. Gas spring with release ring for infinite height adjustment. Large plastic five star base with five castors for soft floors. Body Balance Tec The patented seat joint for freedom of movement in every direction. Supplied flat pack - easy self-assembly.