Great style with the trim fit and great color choices. I have the gray and blue jerseys. I ordered the XL, it fits perfectly. I am 6'3", 32" waist, 44" chest, built like a swimmer at 195 lbs. Sleeves are nice and long with cuffs so no cold air up your sleeves.
This jersey is a good mid layer under 50 degrees F. It breaths really well, but note that it doesn't really stop the wind. I'd ride with a mid layer vest with this jersey if it is not wet out and in the 40 to 50 degree F range. I use a wind stopper jacket or vest with it too if it is wetter out.
I bought this a month ago & have a few rides now. Really happy with fit & feel. Feel is so soft on the brushed interior very comfortable. Also warm enough for me & if it starts to heat up later in day all that is needed is to open the front a bit. For me 173cm tall & 68kg with 96cm chest Medium was a perfect fit & actually I could probably go down one as jersey if stretchy but not loose flappy in anyway so Medium is fine & Castelli size chart was spot on in my case I bought the Military Green?yellow & it goes beautifully with some Yellow shoes I have :) Very Happy with this jersey & will now grab another color too!