When the king of high-tech outdoor apparel designs a jacket specifically for ski mountaineering, you can rest assured that it’s going to work. The Arc’Teryx Procline Comp Jacket is mostly comprised of Gore Windstopper fabric, a breathable yet wind-stopping shield that isolates you from the elements without bogging you down. This allows for complex moves in technical terrain no matter the weather. Strategic parts of the jacket are made from the light, supple, and stretchy Fortius 1.0 softshell layer that is even more breatheable and allows uninhibited range of motion. Blending the two high-tech fabrics requires body-mapping to maximize the benefits of each material, something Arc’Teryx nailed. The Windstopper is on the parts of the jacket that take the brunt of the weather: the hood, front of the torso, arms, and lower back. The stretchy and breathable Fortius 1.0 softshell fabric can be found on the core, underside of the arms, and middle of the back. Blending the two allows for a light, breathable, and equally shield-like jacket that still allows you the same range of motion as pajamas. The Procline Comp is the gold-standard for technical missions in unpredictable weather.