Supportive mesh back office chair with headrest Synchro mechanism provides seat height and tilt adjustment whilst the arms are height adjustable Torsion control knob allows adjustment of the tilt tension to best match your body weight and personal preference 5 year component and 2 year upholstery. Designed with a 115 kg weight tolerance and for up to 8 hours daily use Total Dimensions (W x D x H): 63 x 62 x 118 to 126 cm. Seat width 53 cm, seat depth 50 cm, back width 50 cm, back height (excl. headrest) 73 cm, seat height 45 to 53 cm, arm rest height from seat 17 to 23.5 cm