The laces on the marathon shoes I purchased were too short, so I bought new ones. However, they were thinner than expected and the knots kept coming undone, so I can't use them for marathons. They should be fine for wearing as sneakers. The white line area has a bit of a sticky feel, and double-knotting them makes them less likely to come undone. Purchased for ¥1,100 Width: 5mm