It’s always good to confirm with your local ski shop if the boots you’re considering will fit the bindings on your skis and vice versa if you’re purchasing boots first. That said, most alpine boots and ski bindings are compatible with each other. Many bindings are “MNC” which means Multi-Norm Compatible and will accept most modern boots. If you already own skis and bindings and want to be sure you get boots that will fit, you need to determine the exact make and model of your bindings to confirm what types of boots to shop for. If you aren’t sure, take them to a local shop for help or reach out to the binding manufacturer directly and ask them to confirm what types of boots will work with their bindings.