A synchro tilt mechanism allows the backrest and seat to move together in a coordinated ratio when the user reclines. Typically, the backrest reclines through a greater angle than the seat tilts, helping maintain a more stable relationship between the user's body and the chair.
The exact movement ratio varies between mechanisms. Some designs also allow the user to lock the chair at specific recline positions or adjust the resistance required to recline.
Synchro tilt mechanisms are commonly used in ergonomic office chairs where users alternate between upright working and reclined positions.
