100% NylonPackage included: you will receive 1 pair of led light up shoelaces with bright colors, which is enough to decorate your shoes, when you wear it can make you look more stylish around the crowd, it is very easy to tie and can be applied for adults kids boys girlsQuality material: these flashing shoelaces are made of nylon, which is comfortable and soft to touch, skin-friendly and comfy to wear, easy to clean and not easy to break and fade, it can give you an amazing wearing experience3 Lighting modes: this light up shoestring has 3 modes of design, fast flash, slow flash and long light, you can press the button to switch at will, this novel design makes your shoelace different and become the stylish star of the partyWide application: these LED light shoelaces are suitable for concerts, night out, weddings, birthday parties, carnival parties, Halloween parties, hip-hop dancing, skating, running, biking, role-playing, safety warnings, disco and moreLighted shoelaces: these led light up shoestrings are suitable for sports shoes, casual shoes, sneakers, running shoes, boots and skates, etc., tied on the shoelaces can be lighted, lighted shoelaces can last for about 48 hours, when the battery is exhausted, can be replaced by a new