The Salomon Men's Trail Runner T-Shirt is lightweight, breathable, and ready to hit the trails whether you're slogging up them or sprinting down. ActiLite Pro and Micro Stretch materials blend polyester with elastane to wick moisture, dry quickly, and offer a four-way stretch for unimpeded mobility. An active fit with flatlock seams ensure you stay comfortable from the trailhead all the way to the end of your loop. ActiLite Pro and Micro Stretch materials. Active fit. Flatlock seams.