Review on Jofan LED Shoelaces: Light Up Your Shoes with 6 Pairs in 3 Modes and 6 Colors for Any Occasion by Ramesh Eastep

Brought her to Burning Man. Used the blue 3 nights in a row (probably over 20 hours total) and the batteries are still working. It's great that there are 6 of these in a pack so you can swap out the lanyard for another pair in a different color when the batteries run out. They are washable and can be tied like normal shoelaces. Bright enough to read at night.