These days in Australia it’s unlikely you’ll see a cork hat. (What?) You’re more likely to see a snap back than a cork hat. Perhaps you’ll see a Greg Chappell broad brim hat (What?), or perhaps some kids wearing a legionnaires cap (What?). The times they are a-changin’.
A cork hat is a broad brim hat, or slouch hat, with corks having from strings tied to the edges. The corks’ low density means the hat’s weight barely increases. Science!
Basically, the cork hat represents the symbolical, mythological or stereotypical Aussie, or rocker or bogan, i.e. Patriot.
If you want to be a patriot, try wearing a cork hat.