Field shirt — a shirt halfway into jacket territory — made in London, with rain-proof cotton from Scotland, and horn buttons from the Midlands. This version of the field shirt fits true to size for a shirt — which is to say, if you intend to wear it more as a jacket than a shirt, then go one size up. This is best washed by hand in lukewarm water or dry-cleaned. If a washing machine must be used, cold wash and no tumble-drying is the only option. Bonus points may be earned using one of those clever potions designed for hydrophobic materials.