Perfect as a mid-layer or as the main event, the Nike Therma-Fit technology helps manage your body's natural heat in chilly weather.  Soft fleece fabric keeps your body and arms warm while stretchy woven fabric at upper back give you plenty of room to move.  Elastic binding at the cuffs helps keep the sleeves in place while you move.  Modern notched collar design provides comfort and reduces neck irritation.  Swoosh design trademark at left sleeve.