Have you ever stopped to look at your running shoes and wondered what those extra shoelace holes are for? Well, the folks at Illumiseen, a company that sells LED safety accessories for active people, made this video to explain the purpose of those shoelace holes.
If your laces are tightened properly using these holes, you can prevent blisters on the heels of your feet.
To do this, you'll need to create a "heel lock" or "lace lock" with your shoelaces, which will keep your foot tight in your sneaker.
The video will show you how:
I learned something new today. Thank you, Internet.
via reddit
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