There are two kinds of people in this world: people who divide people into two kinds and the others. Also, people who want a leash on their hat and people who don't. If you're the latter, we have found your floppy hat.
Seirus may be better know for their cold weather gear, but they are no slouches when it comes to sun protection. They make a range of sun hats, some with neck gaiters and leashes even, but we like their basic - and basically named - Floppy Hat.
The Floppy is what we called in the US Army an Australian bush hat. It's a wide brim boonie hat with the ability to snap up one side (dashing jaunty Australian look) or both sides (manly American cowboy look). But if you're buying a sun hat, you'll be leaving both sides down as God and Mr. Seirus intended. In this configuration the Floppy Hat (still love that name!) provides generous sun protection, and sheds light rain thanks to its Supplex construction.
You could always jerry-rig a leash if you need it for windy conditions, but the Floppy Hat works beautifully as is. The only other feature is a mesh lining, which you could probably cut out if you wanted to although it does seem to keep the hat from becoming plastered to your head. The Floppy Hat is, as the description strongly implies, very floppy but not excessively so. The copious stitching on the brim keeps it just rigid enough, and in the end it's just a great sun hat. To paraphrase Mr. Henry Ford, the Floppy Hat comes in any color you want as long as it's beige.