éSilicone is a kind of material with flexibility and durability.Unique grip design, can bear greater tension, so that the shoe laces is difficult to separate from the holes. silicone shoelaces are waterproof and don't get wet in the rain or snow. When they get dirty, simply wipe them off with a wet cloth and they will look brand new! Easy to lace, and needn't to tie once lacing on, once and for all! The very flaxible shoe laces will adjust its tightness so that you don't need to worry the size will not fit you. No more your silly glazed shoelaces! By simply changing out your regular shoelaces with silicone laces on any pair of footwear, you will notice an immediate improvement in the look, fun, functional and fashionable addition to your footwear! Usage:Sneaker, Board Shoes, Sandals, Casual Shoes and so on. Package include:1 set (16 pcs) shoelaces Size and package: Adult style 16pcs: approx. 3.8, 4.2, 4.5, 5.0, 5.3, 5.8, 6.3, 6.8cmé