LOCKING DEVICE: Our elastic shoe laces design with locking device, so you don't need to worry about the shoelaces being loosened frequently. And compared with traditional shoelaces, these devices can save more time.
EASY TO USE: Quick to install, easy to use. You can tighten them with the simple slide of shoelaces lock, and adjust tightness as you want.
MADE TO LAST: Made from strong nylon with a natural elastic core, always seem to outlast your shoes.