Duckworth’s patented high performance Vapor Wool fabric is lightweight, no-stink, and ultra fast drying. The heathered tri-blend fabric has a relaxed fit and transitions from mountain function to town life with laid back style. Tested by Montana high-alpine ranchers at 9500 feet (where the wool is grown) it was their favorite piece of gear for months of continuous wear. This summer weight wool fabric has all natural stretch with no added lycra, the wool is 100% grown in Montana on the Helle ranch and the custom yarn is knit and sewn entirely in the USA.