CH-283A-HS★Backrest: PA back frame, with PA special mesh fabric, with 8 levels of ergonomic up and down adjustment of the lumbar support★Seat: PA chair frame, with PA special mesh, with 5 levels of sliding function front and back★Armrest: Black PU armrest surface, gray 3D lifting armrest support, 7 levels of lifting★Chassis: Black four-speed wire-controlled locking chassis★Gas rod: 65mm stroke, 50mm countersunk three-stage gas rod★Chair feet: 340mmPA five-star feet★Chair wheels: 60/25 black PU wheelsBack to product list