The Houdini Stop is an aftermarket product used to help prevent children removing their arms from their harnesses. The Houdini Stop has been officially crash tested and proven not to interfere with, or prevent harnesses from functioning properly. Houdini Stop has also been proven not to ride up and cause choking hazard.
Simply press the side release buttons in, slip the Houdini Stop around the existing harnessing and press closed. Relax knowing your child is once again fully safe and secure.