Feature: *Adjustable headrest *ventilated mesh backrest * Certificated mesh, fabric and molded foam by fire retardant of CA TB117-2013 *seat is molded foam *lumbar support–it can be adjusted for height * Adjustable armrest *mechanism–backrest can be locked at upright position * Nylon base with running castors *SHS Grade 4 gas cylinder for height adjustable Black Fabric Black Mesh