The Nite Ize KnotBone LaceLock keeps shoelaces at the tension you want without tying a bow. Thread the laces through it, adjust them, then use a simple wrap-and-lock motion to hold them in place all day. It gives a consistent fit, which suits runners, athletes and anyone in sport that needs secure footing, and it is handy for children who have not yet learnt to tie their laces. For a quick errand you can thread the laces through the back of the LaceLock, cinch and go. Each LaceLock is made of two black plastic parts that clip together over the laces. The pack contains two LaceLocks, enough for one pair of shoes.