The Bonded RADIANT HEAT Jacket for men helps you run like a champion with the warming benefits afforded by our new RADIANT HEAT technology, featuring metallic woven fabric inspired by marathon mylar blankets. Infused with a unique plasma process, this fabric lines the back neck, front chest and sleeves to deliver superior warmth by reflecting your body’s heat back to you. Meanwhile, NB Heat knit fabric on the back, underarms and cuffs offers breathable warmth that wicks sweat away and makes this modern essential movement-ready. A bonded baffle at the neck, sleeves and collar makes the athletic fit more comfortable.