High performance patented Vapor Wool fabric is lightweight, no-stink, and ultra fast drying, perfect for a day on the water, where the added cover of long sleeves and a loose hood can make the difference. It is used by professionals in the mountains and in marine conditions, where protection from the sun can make a difference. Wool is anti-microbial, so there is no stink, and this summer wool fabric has all natural stretch with no added lycra. It is 100% grown in Montana and made in USA. The reduced Hoody style adds the extra protection from wind with absolutely no bulk, and makes it easy to pack and train in when on the go. This is the one hoody you need for trans-habitation from the city to the wild.