Ergonomic high back fabric operator chair Deep padded contoured back is designed to support users working at their desk for long periods of timeFeatures gas height adjustment, ratchet back height adjustment, back rake adjustment and weight tension controlChoice of permanent contact back (PCB) or asynchro backPermanent contact back (PCB) allows you to adjust the tilt of the back rest or leave it free floatingAsynchro mechanism provides free floating back action, lockable seat and backFitted with lumbar support, seat slide and chrome base as standardSupplied with height adjustable armsAvailable in a choice of fabric or vinyl upholsteryConforms to EN 1335–1:2000, EN 1335–2:2018 and BS 5459–2:2000 + A2:20085 year warranty