It is a lovely humid 100 degree day today. Aside from the basics of staying hydrated and such does anyone have any tips/tricks to staying cool in the summer heat? For me a good headband is a must to keep the sweat out of my eyes. I like "Junk" brand. Great material, cool designs, and thin enough fit under under my helmet with the Oregon Aero Zetaliner. It is always a risk vs reward with undershirts trying to find something that keeps you cool but won't melt to your skin in a fire. Currently wearing Under Armour Charged Cotton which are pretty good. I have a cooling towel but really haven't used it much. Always seem to forget about it.