<div id="ooyalaplayer" style="width: 800px; height: 450px;"></div><div style="display:none;" id="kalturavideoplaceholder">kalturavideoplaceholder</div><div><div><script src="https://apis.google.com/js/platform.js"></script><div class="g-ytsubscribe" data-channel="BusinessInsider" data-layout="full" data-count="default"></div></div></div><p class="embed-spacer"></p><p>The extra eyelet at the top of running sneakers has puzzled us for years - what is it for?!</p><p>Turns out that extra hole helps runners tie their shoes extra tight with a "lace lock" or "heel lock" method.</p><p><strong>Follow BI Video:</strong><span>&#xa0;</span><a href="https://twitter.com/BI_Video" target="_blank">On Twitter</a></p>

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We finally learned the purpose of that extra shoelace on your sneakers

kalturavideoplaceholderThe extra eyelet at the top of running sneakers has puzzled us for years - what is it for?!Turns out that extra hole helps runners tie their shoes extra tight with a "lace lock" or "heel lock" method.Follow BI Video:&#xa0;On Twitter

kalturavideoplaceholderThe extra eyelet at the top of running sneakers has puzzled us for years  what is it for?! Turns out that extra hole helps runners tie their shoes extra tight with a lace lock or heel lock method.

We finally learned the purpose of that extra shoelace on your sneakers

Arielle Berger

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