A stylish, vesatile mesh back office chair. Synchro mechanism, silver base and adjustable arms as standard. Synchro Mechanism The seat will go up and down and you can fix or free float the angle of the seat and back rest together - in a ration of 2:1, so for every one degree the seat tilts, the back rest tilts two degrees. The easy way to find a comfortable position. You can even adjust the torsion control knob to match your body weight. With an 'anti-shock' mechanism facility to prevent the user from being thrown forward when the mechanism is unlocked. The Fonz comes with a 5 year component and a 2 year upholstery guarantee. Weight tolerance: 20 Stone Hours usage: 8 Hours Dimensions: Seat Width: 510mm Seat Depth: 460mm Back Height: 650mm Back Width: 495mm Seat Height: 440-525mm