The Women's Sphere 1/2 Zip Running Tee delivers a warm, breathable midlayer for your run. Its updated design features built-in mittens for complete coverage when the weather turns cold. Sphere nodes are placed on the outside of the garment for visual warmth. The sleeve cuffs can be used as mittens for extended coverage. The 1/2-zippered design lets you adjust the airflow with Dri-Fit technology helping you stay dry and comfortable.