There are some things on our clothes that we just accept are there without really questioning why they're there. Take the teeny tiny pocket on jeans, for example. It turns out it's not just a weird design feature but actually had a real use at one point. And the extra shoelace hole in sneakers? That also has a purpose. To add to the list, the button loop detail often found on a winter coat apparently isn't there just to look pretty. As reported by The Sun in 2018, a Twitter user shared her knowledge with the world:Yep, the buttons are actually there to keep a bag strap in place. Another user commented this probably derives from military uniform, which often would feature these shoulder buttons to keep things like backpacks and ammunition in place.Who knew?