This cowboy hat sits atop a headband with an adjustable chin strap. This adjustable strap makes it easier for the item to sit comfortably and fit correctly on your pet's head! Want a simple and easy Halloween costume for your dog this year? This cowboy hat is the perfect costume because it comes in one piece and is not constricting for your pet. It is also perfect because it's adorable! This item is suitable for medium and large as the headband stretches from 4" to 8."