Gore Running Wear X-Run Ultra Long Shirt - Long-Sleeve - Men's - $49.47

At first glance, the Gore Running Wear Men's X-Run Ultra Long Shirt might look like your typical performance shirt, but this ultralight top packs a punch aimed right at trail runners and endurance athletes. Lightweight fabric keeps you cool when it's hot, convertible sleeve hems flip down to cover your hands like mittens when it's chilly, and flat seams offer a supremely comfortable fit. This is a snug-fitting performance shirt for runners who love the dirt. - $49.47