In a (no doubt) doomed attempt at appearing respectable, I'm going to need summer weight sport coats every so often. Any suggestions? By summer I mean upwards of 100° F and 100% humidity. Really nasty and uncomfortable.
So yeah, ideas?
Unlined linen, in a light colour (cream is ideal) to prevent light absorption ... you don't want to wear your own personal solar energy panel on your back, now do you??
Linen will breathe well, and is about the best you can do for dissipating sweat.