The Houdini Stop chest strap helps the passenger to stay safely and correctly positioned within their harness.
It simply clips on to each shoulder strap of the harness neatly positioned (underneath the adjusters on our harnesses) to help prevent the passenger from separating the shoulder straps in order to escape.
Once the Houdini Stop chest strap is in place, it should stay there. The passenger can not easily move it up or down.
It is universal and can be used on many types of harnesses, from child car seats, H Harnesses, highchairs, and even prams or strollers.