The Nathan Dash Long Sleeve will keep you comfortable all run long. This running top is made from TriDry™ fabric which is a combination of nylon, polyester and elastane yarn to make it soft, breathable, sweat-wicking and quick-drying. Plus, it has a UPF 50+ rating to protect you from the sun. The four-way stretch material and side seams that angle forward with a v-notch at the hemline make sure you have maximum freedom of movement whether you are doing yoga, lifting weights or running. Make the most out of every workout with the Nathan Dash Long Sleeve.