Using these Kayland replacement laces is easy. Just thread them through the eyelets of your shoes as you normally would. When choosing a length, pick the one that gives you enough lace to tie a comfortable bow. For the color, go with the one that matches your shoes or personal style. To keep your laces in good condition, you can wash them by hand in mild soapy water. Let them air dry. Avoid using harsh chemicals as they may damage the laces. Also, when tying your shoes, don't pull too hard on the laces to prevent them from fraying.