STIRLING PARKAForm or function? Why not have both? Whether you're braving the wilds of the Canadian tundra or battling a polar vortex on your way to work, The Stirling Parka's DWR (durable water repellent) coating, breathable cotton nylon shell, premium 80 20 down, and detachable fur trimmed hood will hold you down with style to spare. Protection Rating Level 4: Canada Cold Tailored and engineered specifically to endure the extreme cold of Canada the True North.