Saddle stool, self-balancing, height adjustable 480 - 660 mm, black. Supplied = pre-assembled, final assembly by customer. Seat height = 480 - 660 mm. Seat diameter = 400 mm. Seat material = polyester, urethane foam. Seat colour = black. Type of height adjustment = gas spring. Frame design = pedestal base. Frame material = plastic. Frame colour = black. Foot plate diameter = 645 mm. Seat design = saddle seat. Seat width = 380 mm. Seat depth = 400 mm. Max. load = 110 kg. Product type = office stools, saddle stools. Dynamic and active sitting due to an angle that pivots around the base joint in a wavelike motion. The stool swings in all directions and is effortless to adapt to your posture optimally. The saddle seat features a recess to relieve pressure on the male genitals. The self balancing swivel stool that rotates 360°. Seat made of soft urethane foam with black seat cushion cover. The ergonomically shaped saddle seat features a recess in the front seat area to relieve pressure on the male genitals. Seat angle: ±8°, seat height adjustment by operating a lever, with plastic 4 foot base with integrated floor glides.