If you spend lots of time outdoors (and we know you do) a good sun-protection plan is needed, from the head down.
Sunscreen can be a pain, but protection from solar exposure is not a matter to take lightly. One product type I recommend comes from Outdoor Research.
The Seattle-based company makes multiple built-for-outdoors brimmed caps equipped with capes.
I first wore this style of hat during a desert crossing in 2006. More than a week of exposure in the sand-scape of eastern Utah during the Primal Quest Adventure Race was mitigated by a cap with a shadow-producing brim and a fabric flap on back.

Review: Outdoor Research ActiveIce Cap
‘Cooling’ Fabric Included
