As it's getting warmer (into roasting territory!) I think I need something to a) keep the sun out of my eyes and b) keep the sweat out of my eyes.
I tried a cap the other day and it certainly did the job but I think it may just make things a bit too warm. A headband would probably require sunglasses as well and I'm just not sure about a visor...
Can you get thin running caps which allow the heat to escape?