1.2012 the Cheapest/ Glowing led shoelace 2.Nylon or High light-guide ... easy to change the battery.♥ Product Name: Party nolvety Flashing LED Shoelace ♥ Item No.: YZG-BI Series ♥ Material available ... Red, Green, Yellow, Blue, Black, Pink,Orange etc. ♥ Led color available: Red, Green, Yellow, Blue, Black, Pink,Orange ... for children or any one who like sports. 2012 the Cheapest/ Glowing led shoelace