NIKE Men's Dry Miler Running Top 100% Polyester zipper closure Essential for beginners and elites, the Nike Miler Men's Short-Sleeve Running Top is a classic crew-neck top for any mileage. The simple design lets you transition the top into your everyday hustle. The soft fabric has Dri-FIT Technology that helps keep you dry and comfortable by pulling sweat away from your skin to the fabric's surface, where it quickly evaporates. Mesh panels on the sides and the entire back let body heat escape. This allows you to cool down as your run heats up. The seams are flat, so the top feels smooth on your skin as you run, no matter how many miles you put in.