Perfect for a 13 year old boy who treats all shoes as slip-on. No more dangling laces to trip over. No more smashing the heel down. These have enough stretch to let the feet slide in, yet stay snug enough for all activities. For reference, he wears a men's size 10 shoe. Of course the laces can be trimmed for smaller sizes. The width was identical to the flat laces in sneakers. Such good quality that I assume these will be transferred to his next pair of shoes. He advised me to give these laces 5 stars.