I liked the subtle design and fit of this jersey enough to buy a second one when it went on sale. This is definitely a stretchy and lightweight warm weather jersey, but I'm curious how it'll do with a base layer underneath when the weather starts cooling down. I like how breathable the fabric feels and it's ability to spread moisture out. The jersey actually feels better once you get the sweat going. The sleeves stay in place and are laser cut with a modern length seen on higher end jerseys these days. As for the fit, I'm 5'7", 151 lbs, and purchased a M. I typically size up with Castelli, but I took a chance and am pleased with the fit. My jerseys were made in El Salvador if that matters. The fit is close to skin and feels like a race fit jersey except for the slightly lengthier cut at the back. The armpits and chest may feel a little bunched while standing, but feels comfortable in the riding position. Especially, in the drops. I think the cut is anatomically designed that way. The rear pockets are easily accessible for a form fit jersey, but I'd prefer an angled entry for the two side compartments. Overall, a great training jersey for the price!