Extra Holes in Sneakers
Unless someone else ties your shoelaces for you, there’s no way you haven’t noticed the extra unused holes at the top of your shoes. It’s not a design flaw; in fact, the extra holes are there for your benefit. People who get blisters on their feet or can feel their feet moving around inside their shoe can place their shoelaces in those extra holes but in the opposite direction.
This creates a loop on each side, allowing you to cross your laces inside each loop. Then you pull down on the laces to create a much tighter lock before tying your laces normally. This maneuver is called the “lace lock” or “heel lock” and it helps ensure that your shoes remain tight to your feet.
