Meet the Arc'teryx Proton Lightweight Hoodie Jacket, a pinnacle of versatile outerwear where innovation meets function. Designed for the avid adventurer, this jacket features the cutting-edge Fortius™ Air 20 fabric, boasting not only exceptional durability and stretch but also superior wind resistance and breathability for thermal regulation. Articulated for ease of movement, the Proton ensures that your mobility is unimpeded whether you're scaling peaks or navigating rugged trails.