Our Micro Climate Jacket is the ultimate lightweight packable jacket. It features an extremely durable, lightweight fabric, custom milled especially for us. This jacket breathes like nothing we've ever used. Ever read about the $500 Olympic swimsuits? This fabric comes from that same stretch woven process. For insulation we designed a lofted pattern and placed it at strategic areas to keep the user warm and dry without overheating. The fabric has a patented treatment applied permanently to each fiber strand which resists moisture. That treatment along with the compact textile structure makes this jacket water-resistant and quick to dry without a coating that could wash off.  This special fabric has an abundance of stretch and consistent recovery making it comfortable while moving with the rider. A single rear pocket serves 2 purposes, the first is for your essentials (phone, snacks, gloves etc), the second is as a reversible stuff sack which the jacket can easily be packed into when it warms up.