Dominate mountain trails in the Short Sleeve Arc'teryx Sarix Shirt. Take it as your scepter, the sign as your rightful place as king of the mountain. This trim fit running shirt isn't just symbolic though: it packs quite the technical prowess. Polydel Mesh polyester promotes airflow while wicking your perspiration horizontally, allowing it to evaporation rather than build up. Flatlocked seams prevent the chaffing usually attending the scratchy lines of most less awesome shirts. The Sarix remains so lightweight, you may just forget you're wearing it at all. If you're more of a noctural prowler, then you'll appreciate the addition safety of reflective blazes across the back and front.