The Plus chair is a true ergonomic success story. Created in 2001 it features innovative ergonomic functions approved for a long time and still valid. By giving you the opportunity to choose between two different mechanisms for active seating, the Free Float and the Synchrone, Plus encourages you to take control of your working environment. Synchrone is a tilt mechanism that allows the seat and back of the chair to move in a carefully balanced relationship, with a smooth pattern of movement, for users seeking activity with a sense of control. FreeFloat is a tilt mechanism that encourages movement for an optimal ergonomic working posture. The seat and the backrest of the chair follow the body’s movements independently of each other.