I bought a pair of Castelli Ergo Due bike shorts at Sports Basement last week and gave them a test run on a 55 mile ride on a fairly warm day. They are simply awful. The shamy is positioned a bit more aft than I'd expect, but that's not a huge problem. The huge problem is the rest of the fabric. I don't know exactly what it is (some derivative of spandex), but it breathes about as well as a neoprene scuba suit. If you want to spend your ride feeling like you're sitting in a plastic kiddie pool filled to the brim with ass sweat, or if you want to wear something that feels like a shamWow-stuffed party balloon, run out and buy these shorts.