Amazon.com: Carhartt Men's Shoreline Coat Waterproof Breathable Nylon,Army Green (Closeout),Small: Work Utility Outerwear: Clothing, Shoes & Jewelry
Protip: Carhartt's duck fabric is sort of water repellent but not ideal for heavy rain or snow. I carry a rain poncho in my inside pocket, because weather can be unpredictable. :