Wool has some of the best moisture wicking properties around. I know people who wear wool cycle jerseys as well. They're really great, if expensive.
I buy them off Amazon or locally in sales.
FYI Merino wool cycling jersey:
http://shop.ibex.com/merino-wool-clothing/mens-short-sleeve-shirts/candd-fz-jersey
Last edited by dr_lha; 03-25-15 at 06:34 PM.