Sometimes the specialization of sports gear can get a bit much. And when you first hear the term, "trail running shorts," you might wonder – what's wrong with my regular running shorts? Of course, there's nothing wrong with them. However, the lightweight fabric that provides a perfectly fine cover for all your road runs can be easily ripped by an errant branch on the trail. So if you spend much time off-road it makes sense to at least have a pair or two of shorts that fit a bit tighter and stand up to more rugged use. The Mammut MTR 71 shorts are just what you need.