Turn cold weather in running weather with the Nike Therma-FIT Run Division Jacket. Its hybrid design doubles as an insulated jacket and a comfortable midlayer. We placed lightweight down fill at the chest for warmth, and mesh-lined venting at the back, giving you optimal ventilation. Details like easy-access pockets and an embedded safety whistle keep your essentials close. Cool weather months mean darker days, so reflectivity has been added in key areas. Nike Therma-FIT technology helps manage your body’s natural heat to help keep you warm in cold-weather conditions. It has breathable fabric, with a brushed back for a soft, comfortable feel.