Patagonia Men's Airshed Pro Pullover - Bobcat BrownBuilt for trail runs in changeable alpine conditions, the Airshed Pro Pullover from Patagonia is a fast drying, breathable and, perhaps most importantly, ultralight midlayer. It's constructed from a stretch polyester woven ripstop that's been treated with DWR for protection from light showers. And while the fabric offers exceptional breathable qualities on its own, the style is nevertheless equipped with a two way zip, allowing rapid fire heat dumping