Designed for those who work, live, or play in the mountains, the Marmot Cropp River Jacket is a high-performance line-of-defense against ever-changing alpine weather. It's outfitted with a burly yet breathable two-layer waterproof Gore-Tex membrane, so whether you're hiking, climbing, ski-touring, or mountaineering, you'll be able to stay dry when stormy weather rears its ugly head. And if the day's pursuits require a little extra effort, you've got a set of zippered underarm vents that'll help you do some serious cooling off as you work up a sweat. And because your day is far from over when rain or snow hits, Marmot decided to give this jacket a fixed hood with peripheral adjustments that ensure you can always see well, move your head freely, and stay protected from wind and precipitation as you move through the mountains.