Hmmm...can't disagree with the sunglasses....but honestly I'd feel wierd swinging with them on... You make the point about hats and meat being generated off the head...what colour hat do you wear? I wear a mesh TM baseball style cap...but its black...looks really cool but after a couple of holes you can feel it absorbing heat..as I sweat under the hat, it becomes uncomfortable (like my head can't breath)...and so the hat goes into the bag...leaving my head exposed so that the sweat can evaporate/cool me down.