The Sierra Designs outwear is designed for the mountains and the trip getting into the mountains.  Then the climbing, backpacking and alpine work begins  @ Peak To Sea Products Outdoor Equipment

The Men's Hurricane Rain Jacket is constructed with our 2.5-Layer, 10k waterproof/10k breathable fabric that stands as the barrier between you and the elements. Featuring an adjustable hood with storm collar, underarm zips for ventilation and articulated arms and drop tail for high-active comfort, the Hurricane Rain Jacket goes above and beyond a minimalist waterproof shell. The best part? The Hurricane Rain Jacket has PFC-free Durable Water Repellent (DWR) protection, so there’s never any compromise when choosing between playing, performance and the planet.