Worrying about the difference between men's clogs and men's mules is like worrying about whether a color is azure, indigo or cobalt when you're just looking for blue. You want what you want, and what you want is comfortable, supportive work clogs that can get you through a long day on your feet. It's that simple. And whether they're closed-back clogs or open-backed is really a secondary concern. A great clog (or mule) will give you a little more room around your toes, a bit of freedom in the heel and fit snugly without feeling clingy or tight—no matter what color you choose.