UA Storm technology repels water without sacrificing breathability. Wind-resistant ripstop woven fabric is lightweight but tough. Bungee cordlock on hood for a secure fit while running with a loop to secure the hood when not in use. Secure, zip chest pocket & open hand pockets with segmented interior mesh pockets to prevent bouncing. Fully packable into the zippered left chest pocket. Bungee locker loop for easy hang up. Uses a fluorine-free water repellent treatment