High back operator chair with asynchro mechanism Conforms to BS 1335 (2000) Part 2 Padded back with kidney foam shaping ensures good posture is maintained during the day Generously proportioned seat with waterfall front Features gas height adjustment, back height adjustment, back rake adjustment and seat tilt Asynchro mechanism means that backrest angle can be fixed or set to free float with additional seat angle adjustment Available without arms or with fixed arms or height adjustable arms Black nylon base with easy glide castors Choice of colour 2 year warranty