This lightweight hooded down top can be worn year-round for any type of mountain activity. Deliberately thin and space-saving for easy layering or to be easily stored in the backpack, it incorporates a microcompartment baffle in the middle of the body and shoulders, and nanocompartments (smaller) in the armpits for better breathability. Filled with down with a Pertex® Quantum outer layer, it's lightweight, breathable, warm and windproof. Durable and versatile, it's one of our most popular styles, popular with climbers, hikers and mountaineers around the world.