he Houdini Stop Chest Strap is a device which prevents your child from taking their arms out of their car seat straps. It consists of two simple clips joined by a length of material. The clips connect to each of the 2 car seat straps and hold them closer together preventing your child from wriggling out. It can also be used with highchair and stroller harnesses to prevent children standing up and getting out. It fits over any single layer harness that is up to 38mm wide. FEATURES: NOT UNESCAPABLE - Super smart Houdini children may be able to operate the release button. These children are smart enough to be successfully encouraged to use this skill, but still keep themselves safe while travelling. The Houdini Stop is NOT UNESCAPABLE. It has been purposefully designed so that it still can be removed in a non-emergency situation by an older child or adult.NOT ONLY FOR CAR TRIPS - The Houdini Stop can be used with stroller & high chair harnesses too. It is an extra layer of protection while you are out walking or running with your child in their stroller, and an extra peace of mind while you are feeding your active toddler in their high chair. No more risking falls or climbing out of the high chair and lessen the chance of tumbling out of the stroller if you hit a bump in the sidewalk while out and about.KEEP YOUR LITTLE ONE SAFE WHILE DRIVING - The Houdini Stop is a harness safety accessory that once added, helps prevent your child from removing their arms from many harnesses including their car seat harness. This arm removal is a very dangerous practise, especially if you are in a car accident or have to brake suddenly.EFFECTIVE AND EASY TO USE - Press the side release button in, slip the Houdini Stop anti escape chest clip car seat around the existing harnessing, ensuring it sits in line with the child's chest, and press firmly to close. Relax knowing your child is fully safe and secure.MADE IN NEW ZEALAND & INDEPENDENTLY TESTED: Different from cheaper imitations, the original Houdini Stop is made to high standards of safety and independently tested. It does not interfere with the normal performance of the car seat in any way. Avoid imitations and choose the original Houdini car seat chest clip lock.