Designed specifically to be used with the Tempesta Jacket the Castelli Tempesta Hood works with any jacket with a high collar. The hood fits over the collar to keep rain out of the jacket. The Tempesta hood has a Nano-Flex section around the face that creates a snug breathable and stretchable fit that is more comfortable against the face than most designs it also aids hearing. The front section can be worn over the face in driving rain sleet and snow and then pulled down and worn under the chin in less extreme conditions. The hood also has an integrated peak that can be worn down for protection or flipped up for better visibility. Naturally for a bike specific garment the Castelli Tempest Hood can be worn under a helmet.