The first step is to position your hat on your head where you would normally have it and allow the strap to hang down. Next, take the adjustment slider and pull it out completely until you have it at its maximum length. Take the strap and put over the front brim and back over your head. Take a minute to ensure the sides of the loop slide up and along the outer edge of the brim. This should be identical on both sides. With your other hand guide the strap and then halt pulling when the middle part of the strap is at the center of the hat's crown. To have the brims tied up just hold the adjustment slider in place in the center with one hand. In the other take the middle of the strap then pull it through. Eventually, the side brims will move up and rest against the sides and out of your way.