Offered for sale a set of 2 Vitra ergonomic chairs model AC 4 Conference The elegant AC 4 Conference office swivel chair is equipped with a range of sophisticated functions that not only ensure healthy sitting comfort, but are also discretely hidden. Armrests in aluminium. FlowMotion mechanism with synchronized forward tilt (can be deactivated) and seat depth adjustment. Height adjustable and with reclining backrest. Seat in polyurethane foam covered in hopsak fabric, aluminum base mounted on castors. In nice overall used condition, with stains on the fabric. All mechanisms work except the one that tightens the backrest. Fabric all over good condition. Include booklets with explanation of functions etc. Pick-up or by courier.