This water-repellent wind shirt is a no-brainer for runs in uncertain mountain weather. It's fast drying, ultralightweight and breathable, with a stretch-knit hood and lower sleeves, and a DWR (durable water repellent) finish that's made without PFCs (perfluorinated chemicals). Packs into its own pocket for easy stowability. Made in a Fair Trade Certified™ factory.