Featuring the world's most breathable waterproof fabric, Polartec® Neoshell®, the Flexair Neoshell® Water Jacket combines the ultimate in weather resistance with the ultimate in breathability. Not only does it protect you from a nasty downpour, it enhances natural thermoregulation to release heat and perspiration from inside the jacket, keeping you dry. With its helmet-compatible hood and element-busting adjustment features to make the fit even more secure, this is the ultimate jacket for when the weather turns on the trail.