It's a safe bet that when Castelli does wool, it'll be retro cool. The Mauro's simple design is proof: The old-school logo is mated to off-center stripes for a classic appearance. Details include two button-closure rear pockets, modern cuffs and a knit collar. We're jaded by the superior performance and feel of 100 percent merino (this is half wool and half acrylic), but we were still impressed by how well the Mauro holds its own in performance and impeccable Italian flair.