... Bright Nylon Flashing LED shoelaces, it's visible at 400 meter distance, webbing colors and ... No.: YZG-BI Series ♥ Material available: nylon,High light-guide glass fiber ♥ Webbing color available: Red, Green, ... the battery♥ One pair LED shoelace can keep light about 60 hours even longer by different flashing ... good gift for children or any one who like sports. light up shoelace with customized design