Evolve or die. Thomas Edison said that. Or maybe it was Carrot Top...somebody important said it. Proving that point, the Calor EVO takes our best-selling, top-rated jacket to an entirely new level of performance. Enhanced mobility, comfortable stretch-fit and wind/water-resistant materials make the Calor EVO a top option for mild to cool weather situations on backcountry hunts. Not to be outdone by its predecessor, Calor EVO is every bit as tough and durable as before. Just like Carrot Top...getting better with time.