Arc'teryx made the Atom LT Hooded Insulation Jacket versatile for year round mountain adventures from climbing to skiing. Its Tinthan shell is light yet durable, and the DWR coating sheds rainfall to help keep you dry on hikes and backpacking trips. Breathable Polartec Power Stretch side panels make sure you can move around with complete freedom of motion, whether you're wearing it as a midlayer or an external shell. Synthetic Coreloft insulation retains its warmth in wet weather, and the adjustable StormHood slides over helmets with ease. Arc'teryx also added an adjustable hem, a zippered internal pocket, and two zippered hand pockets for your convenience.