Lightweight Wind resistant Waterproof Packable Trim fit for athletic performance Articulated construction for freedom of movement The moment you're running through challenging terrain as if you're flying. It's an experience you can't have with heavy gear. With Arc'teryx's lightest and most breathable mountain running hoodie, you'll be protected from exposed trails and changing weather. The Camim ripstop material blocks wind and moisture, the Permair 20 panels enhance breathability, and the slim, adjustable hood provides increased protection. Its compact size, which can be stored in a pocket, makes you forget you're even carrying it. You won't even notice it's there.