The LED light up shoelaces are made of 100% nylon, suitable for most shoes, sneakers, casual canvas shoes or leather shoes on the market, even boots and skates. Great for parties, night jogs, and all kinds of nighttime fun! Our glow mode has 3 modes, press the on and off button to switch between keep on, slow flash and fast flash. Always find the right lighting pattern for your needs. Laces measure 45 inches long. Lasts 60-80 hours in "flashing" mode and 40 hours in steady mode.