24/24 ergonomc and multi shift chair NON STOP, now also available in the new version with headrest, a special swivel seat developed for 24 hour use - which perfectly fits environments such as call centers, airports etc. Moreover it is guaranteed to bear up to 150 kg (330 LBS ). It is equipped with a synchronized mechanism which can be locked in different positions, a sliding seat device for seat depth adjustment, an anti-shock backrest, an individually adjustable tension control and a 4-way (in-out-up-down) adjustable Schukra lumbar support . The (optional) arms are of black steel with urethane pads. They are fully adjustable (height-forward/backward-direction-width). A generous seat and backrest padding and dimensions complete the portrait of this unique chair. Other features include Leyform exclusive round flat black epoxy aluminium base, gas lift seat height adjustment, wide castors with self-brake device for carpet and standard floors.