Marva is a homely-looking swivel chair. Its technical features are almost entirely hidden, yet Marva still has all the functions and adjustability you would expect of an ergonomic swivel chair: Synchronic mechanism with automatic spring tension adjustment for dynamic sitting, precise adjustment of the seat, backrest and lumbar area, engageable negative seat tilt for upright sitting and multiple armrest settings. With all these features, Marva fully complies with the most stringent standards for office swivel chairs in accordance with EN 1335. The synchronic mechanism technology is concealed and integrated into the seat. Even the operating controls are mounted flush with the seat.