Specifically designed for use in the electronics and electrical industries. Pass European standard:- EN 61340-5-1:2001 (ESD protective item requirements) Fully ergonomic chair mechanism allowing the following adjustment:- gas lift seat height adjustment, seat tilt, back rest height and back rest rack angle.Cushioned hardwearing upholstered seat and back rest. Available in 3 different finishes:- charcoal and blue fabric, or black vinyl.Supplied with glides.Chrome height adjustable foot ring.ESD Arm rests (Optional) .Seat height adjustment from 500 to 690mm.