Often called the Eaton collar as it was produced at Eton School, the club collar is simply a typical level collar with edges that were rounded off, so they do not have “sharp” edges to them. I wonder if there’s some type of Exclusive clear collar guard obtainable somewhere online https://beauseksy.full-design.com/not-known-factual-statements-about-types-of-collars-shirt-70114040