I'm a heel. I never realized that extra hole in running shoes had an actual purpose. I mean, they are decorative, right? But they do have functionality, and it could be worth trying out!
If you look at your favorite pair of running or gym shoes, you’re likely to find an extra eyelet that sits right near your normal lace slot. This added hole isn’t for improved breathability or the result of a faulty machine in manufacturing, though — it’s used to create what’s known as a heel lock.