Although a fully-fledged brand at this point, Western Hydrodynamic Research are best known for their original caps. For a period of time their almost-mythical headwear seemed to exist solely for the wearing pleasure of industry insiders and a lucky few but they're now slightly easier to obtain.
This is the classic; the hamburger and cheese, the choc-chip cookie, where it all began. A simple canvas construction and embroidered logo with the signature nautical nylon rope to secure which gives you (almost) infinite size options.