Clothes for hot weather

I have been off the mountain this summer, and have realized that I need cooling/moisture wicking long sleeve shirts and pants. Mosquitoes are killing me and it is 100 F+!!! Any recommendations?

Natural fibres, woven rather than knitted, loose fitting, long sleeves. Water can be applied - i.e. poured over to add portable air-con.  Add a hat, wet keeps the brain cool.  Also a wet cotton bandana really helps. Regular summer temperatures in  Oz often exceed 100°F -  a 10 day period over that not unknown.  
Mosquitos less likely to bite if some sort of concentrated brewers yeast add to diet (we use the dreaded Vegemite - not liked by many, it's an  acquired taste). There must be a U.S. equivalent spread? It's also high in vitamins of the B group - so maybe mushrooms?
I know there are modern self wicking tops used by sports folk, but I have no experience of those.  Perhaps others can help with that.

Cotton is the way to go.  

Those sports garments that say they are wicking are usually polyester and they really the best choice?