Trang L.wrote a review of Castelli Gabba 2 Jersey - Men's on December 29, 2016
Familiarity: I've used it several times
I am 5'11" and 165lbs. I wear L for PI and Capo clothing. I used to think Castelli run tight on me until I realized the Gabba is a race fit jersey. I bought a L and initially it feels snug but that's fit feels like. It feels even better when you're actually riding.
Anyway, I am a wuss when it comes with cold weather. In comparison to other parts of the World, the Bay Area is mild. I freeze when temps get to 30s when riding. I had my brand spanking new LS Gabba with base short sleeve base layer when it was in the high 30s and man, I love it. Wind Stopper works wonder! I didn't feel cold at all! When climbing KMR, it was 40 and I had to unzip my Gabba a bit. Next time, I won't need a base layer and I should be good in the 30s.
BTW, I also have a new Perfetto Jacket and honestly, I can't tell the difference with the Gabba. Both work great!