For active trail adventures or lengthy climbing stints, choose our Sigma short sleeve performance tee. It features a knitted-mesh fabrication that enhances wicking and reduces wet cling when you perspire, as well as improving breathability to help keep you cooler in hot conditions. The fabric is also stretchy to allow for range, with a fitted silhouette to assist streamlined movement. Lightweight and quick-drying, the Sigma tee is purpose-made for trail running, climbing, summer hiking or other high intensity pursuits. Reflective print graphics make these outdoor activity safer at night too.