Style is something very individual, very personal, and in their own unique way, I believe everyone is stylish - Salman Khan
It's a proven scientific fact that heat rises - You can rug up from neck to toe during the colder months and still be freezing if you don't wear a hat to cover your head.
Back in the day hats were a sign of social status; in the military they denoted nationality, service and rank - These days they're worn as more of a practical accessory: perfect to shield us from the heat in summer, and help retain warmth in winter.
At the moment I'm really loving fold-able fedoras - The fur felt hat that I'm wearing below can be rolled up and slipped into my pockets in no time. Then it's just as easy to unroll and shape in any way I desire. Don't forget that character is key when it comes to personal style and that includes your accessories.