The 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 ...

While most sneakers come out of the box laced up and ... If they're too uneven, you won't be able to tie your shoes. Note: The shoe pictured above is the Nike Air Force 1 Low with removable ...