Using these shoelaces is easy. Just thread them through the eyelets of your outdoor shoes or boots as you normally would. When choosing between the round and flat laces, consider the style and look you prefer. For a more traditional look, the round laces might be a good option, and for a sleeker appearance, go for the flat ones. As for maintenance, since they have low water absorbance, they dry quickly. If they get dirty, you can simply hand - wash them in mild soapy water and let them air - dry. Avoid using harsh chemicals as they may damage the nylon material. Also, make sure not to over - stretch the laces when tying them, as this could reduce their tensile strength over time.