Extra high square back 24hr ergonomic task chair complete with lumbar support Ideal for call centres, hospitals and other institutions that require round-the-clock support Extra high square back and CMHR flexible foam seats for enhanced comfort complete with waterfall front Features gas height adjustment, weight tension control and standard tilt lock Available with either a permanent contact mechanism or asynchro mechanism Permanent contact back (PCB) allows you to adjust the tilt of the back rest or leave it free floating Asynchro mechanism provides free floating back action with lockable seat and back Supplied with height adjustable arms Chrome 5 star base with easy glide castors Upholstered in a range of fabrics and colours from Camira (5 times Queen\'s Award Winner) 5 year warranty