The mid-layer for frosty morning runs. You focus on your planned split times, lace up your running shoes, pull on your favorite running top, and get ready to run faster – and maybe a little farther too. This mid-layer, sustainably made from recycled fibers, is specifically designed for training in cold weather, providing active warmth and unrestricted freedom of movement. A half-length zipper allows you to regulate your body climate individually, effectively venting or insulating as needed. The perfect mid-layer for fast winter runs or intense ascents.