They are very easy to use. I just laced up the shoes, put the locks on, and cut them to the perfect length. Then, I put the little end cap on the end of the laces, and I was finished! The boys learned how to work the locks easily, and we're all good! It's perfect for kids and busy school mornings! My husband also has a set on his shoes and definitely agrees to the awesomeness. We also love that they come in several colors, so they can match their shoes!