An homage to one of our favorite archive designs, the Trout Run flannel breathes new life into a classic flannel.Originally created in 1940, this design has endured as a wardrobe staple for generations. The latest update to this style continues the legacy of our outdoor spirit and heritage into today. Crafted from soft yet strong 100% cotton, it’s lightweight to keep you warm without being bulky, and is suitable to be worn by itself or with layers. Heritage detailing embodies classic Woolrich style. Re-introducing our iconic Buffalo Check, a pattern invented by Woolrich in 1845 and named for a herd of buffalo owned by the designer, alongside a palette of time-tested plaids.