A certain segment of the off-road market is the hard core, go anywhere anytime guy. And this is a jacket for him. The Flak is a water-proof jacket packed with features like zip-off sleeves, a hydration pocket and port, and water-proof zipper vents and pockets throughout. How do you design a garment with so much complexity and make it look clean? The answer lies in economy of line and double pockets - literally a pocket on top of a pocket - for carrying GPS and every conceivable tool you could need.