Come the warmer months, there are certain items that become indispensable. The perfect shorts, failsafe sunglasses, and increasingly, a standout hat. A summertime curio like no other, the right cap, boater or bucket hat lends the wearer an air of studied carelessness, and, obviously, has the practical effect of protecting his skin from the sun's rays.

Here, we choose four of the best from brilliantly branded to charmingly rustic, to see you through every sun-soaked occasion.