A lightweight and quick-drying midlayer the Norrona Warm1 Hooded Jacket is developed for trail running but we throw it on for any and all cool-weather activities. Its lightweight fabrics are durable quick-drying and warm--not to mention made entirely from recycled polyester fibers. Plus with HeiQ Fresh FFL anti-odor treatment this jacket eliminates the ability of odor to build up after arduous workouts.