Buckle Me Baby collaborated with local New Hampshire Child Passenger Safety Technicians (CPSTs), firemen, and first responders who physically examined the coat and found it to be a safer option to the puffy winter coat and similar to no coat. Checkout Carseatblog's review: https://carseatblog.com/43789/so-safe-and-so-warm-a-review-of-the-buckle-me-baby-coat/