We have gone through a lot of different hats and settled on these Richardson MultiCam Trucker hats as being some of our absolute favorites. These hats are snap back and are one size fits most. They're made from Ripstop nylon in front and poly mesh in the back and are nice and breathable.
The best part about these hats? We wore the MultiCam Black version on a sweltering August day in Florida, while wearing a bite suit and sweating profusely and it had almost no sweat stains after we were done. For anyone who wears hats while sweating, this is almost unheard of.