The Pertex® Quantum Air Jacket is a lightweight windproof shell built with Japan Fabric, a supple, lightweight material developed using Japanese textile technology. Its ripstop construction, woven from 20D yarn, holds up well against tears and everyday wear. An acrylic coating gives it strong windproofing, while strategically placed back ventilation keeps the interior comfortable rather than stuffy. That same lightness carries through to the hardware and small details, and a large chest pocket adds practical storage that's still easy to reach. It also packs down small, making it easy to bring along wherever you go.mIt's especially handy when temperatures swing throughout the day, its generous fit leaves room to layer a mid-layer underneath, so it holds up even as things get colder.
