Elastic material The shoelaces are made of elastic spandex and cotton, which are strong and durable. .Convenient DesignThe shoelaces only need to adjust the length and tightness, and tighten the metal buckle, you don't have to worry about the shoelaces loosening. .Metal buckleThe laces come with a metal buckle, elegant and easy to use. The metal buckle can be easily tightened, saving time tying the laces. .Widely used These shoelaces are suitable for sports shoes, running shoes and leisure shoes. Ideal for running, walking, hiking and cycling. .Package Contents3/6 pairs of shoelaces (Optional, one pair of shoelaces comes with two metal buckles.) .