When you’re out exercising, the last thing you want to be thinking about is your clothing. There are any number of more important thoughts that should be occupying your mind, like: “Don’t trip on that rock;” “Look at that beautiful view;” “What’s my heart-rate?” and so on. Unfortunately, all too often, clothing malfunctions can get in the way of a perfectly good outing. Maybe your shorts are chafing, or maybe they keep riding down as...