I'm in Michigan, so pretty soon I'm going to be an icebiker (yay!). I'm pretty up to dressing in layers, but the base layer that needs to wick sweat that I generate - I'm confused. I mean Polypro. is supposed to wick sweat away from your skin, yes, but don't you also use it when exercising when it is hot? I suppose that when protected from the wind by other layers, it allows you to stay dry and thus warm though... is this correct?
Most importantly, though, which brand/material do you guys prefer? Anyone use underarmour? (the summer variety)