When the promise of a trail sunrise gets you going before the alarm, slip on the All Weather Zip-Neck and run to meet the dawn. Worn alone or as a second layer, this cool-weather, long-sleeved running layer helps you manage your core temperature with a soft and breathable 88% polyester/12% spandex fabric and ventilating airflow mesh back panel. For even more thermal control, the zip-neck lets you zip up or cool down with ease, and hidden thumb holes and fold-over mitts keep sleeves snug and hands toasty. Reflective zipper and logos (front and back) make you easy to spot. With Polygiene permanent odor control and UPF-15 sun protection.