The Atomic Treeline 2L Flex Jacket M is a sophisticated jacket, but with a cool, clean design. It’s covered with Pertex flex material that gives it a matt finish and makes it tough and waterproof enough for all-mountain skiing. But thanks to PrimaLoft Silver insulation it’s also super warm. Strategically placed Thermaflect lining over key areas like shoulders and kidneys, and a snug jacket-to-pant interface, combine to keep you warm and dry without restricting your movement. We’ve also incorporated vents at the front for easier access and better temperature control, plus a dedicated music pouch with headphone access.