7. The horizontal buttonholes on your shirt
Here’s another riddle connected with your shirt —Ever wondered why are the buttonholes for the highest and lower catches flat, while all the others are vertical? This riddle’s answer is that a level buttonhole makes this more unusual compared with a vertical one.
via
8. The extra eyelets on your sneakers
Only a few people see the additional eyelets on their running shoes. However, we all should see them, because of a remarkably valuable. These eyelets are intended to change the shoes set up on your feet and keep them from rubbing your lower legs while you’re playing the sport.