The king of the Dawn Patrol deserves a jacket fitting of his rank, which is why the Marmot Castle Peak Jacket is a trusted friend to those that are no stranger to fast climbs and cold mornings. It offers the waterproof protection you'd expect from a dedicated ski jacket, but comes with an added burst of breathability thanks to the Polartec NeoShell fabric and Alpha insulation. The NeoShell face is protective yet air permeable, ensuring that your waterproof shell won't trap heat and have you soaked with sweat on the inside. Your insulation won't either, thanks to innovative Polartec Alpha insulation. This high-lofted knit insulation provides comfortable warmth that'll keep your body at an ideal temperature--not too hot on the ascent and not too cold when scoping a line on cold summits. Add in underarm vents and you've got the regulation and breathability you need for the speediest of backcountry missions, along with a helmet compatible hood and built-in powder skirt to keep snow and wind where they belong.