You know that extra weird shoelace hole at the ankles of your running shoes? You can use it to tie a heel lock. Also called a ...

Check out the video of [Pentland_Designs] Shoelace locks after the break. For more shoe-tech, check out these LEGO self-lacing shoes, or this teardown of Nike’s self-lacing offering.

Turns out that extra hole helps runners tie their shoes extra tight with a "lace lock" or "heel lock" method. Follow BI Video: On Twitter More from Sports The extra eyelet at the top of running ...