re: Best long-sleeve shirts for hot weather? Anything but the ugly shirts w/ pockets

What youre looking for is Merino Wool. It is amazing. Will keep you warm during winter and cool during summer, very breathable and accels at scent prevention. I like Minus 33 brand and First Lite gear is pretty much top of the line.

First Lite Llano Long Sleeve Merino Wool Crew

Expensive but absolutely worth every penny.