Filson'sultra-lightweight shirt packs easily for travel and transitions from the city to the field. It's made of breathable cotton that's been pre-washed to reduce shrinkage. The pleated back provides mobility through the shoulders, so you can work, flex, and stretch in it. Double-needle construction adds durability to this versatile shirt. The chest pockets is built for tools, and the back hanging loop offers a way to display your license easily.