While the elasticized waist and semi-fitted cut on Salomon's Trail Comp makes it resemble a lot of other running shorts out there the difference is in the rugged and breathable Acti-Lite Dobby fabric that's suited for your toughest running trails. Like you we know a thing or two about summer overgrowth and those vines and brambles that snare and tear ordinary running short (and shirt) fabrics. Salomon's Trail Comp Short resists snags without cutting off the essential moisture transfer properties essential for performance activewear. On the inside you'll find a breathable and fast-drying Acti-Lite polyester inner brief that minimizes chafing concerns even after a good hour of speedwork (remember choosing the right size is key in the first place). In back you'll also find a zippered back pocket for your keys energy goo or even one of those really compact MP3 music players.