The Senza Ergonomic Asynchro Task Chair has been designed to function for heavy duty, 24 hour usage in any task or office setting. With its extra high back and adjustable arms, the Senza offers multiple enhanced ergonomic features based on how people sit and move over the course of a day. The Senza benefits from a gas lift adjustment, with a seat height variance of 47 to 60 cm. It has a user's weight tension control mechanism which means the chair can be adjusted to accommodate the weight of the user thus allowing for a smooth reclining action. The chair also has a tilt adjustment mechanism which means the seat and back of the chair move backwards in tandem, providing maximum support.