Buck Mason makes modern American classics that will last far beyond a single season. Founded in 2013 by Sasha Koehn and Erik Allen, the Los Angeles based menswear label uses old school manufacturing techniques and modern technology to create wardrobe essentials that make it easy to be the best-dressed guy in the room. Their latest offering is this Brushed Flannel Two Pocket Shirt that was brushed across every inch of the fabric to feel like a rare lived-in vintage find that has been washed and worn a hundred times. Wear it under, over, or by itself. The shirt is available in a choice of black, navy, or charcoal.