Breathable high mesh back with silver polycarbonate backrest outer 105mm height adjustable ratchet backrest. Lumbar support easily adjustable by side knobs 105mm height adjustable headrest on a silver powder coated aluminium track and 30 degrees tilt. Anatomically-shaped seat with moulded foam and under-seat shell. Depth adjustable seat slide. Large nylon base for stability, fitted with oversized hooded castors. Synchronised mechanism with multi position tilt lock and tension control adjustable for body weight. Height adjustable aluminium armrests with 3 way adjustable arm pads. Width 530mm x Depth 550mm Back width 530mm x Back height 800mm x Seat height 470/560mm