I like all the little things about this jersey. The reflective strips sewn into the forearm seams are really neat, the sleeves have plenty of length to use the thumb holes and the fabric is as soft as pajamas. My only complaint would be that the silicone gripper on the back is way heavier than the knit. Heavy enough that it'll flop around sometimes, but at least you know your lower back will be covered.
Now, the sizing. For reference I'm 5'10" and 165 and usually wear a Large in Capo or Castelli and the like. I ordered two sizes so I could find a good fit. The Small fit very form-fit (which you may want) and I could've kept it, but it wouldn't be as useful for biking somewhere and looking casual once I get there. The Medium fits me like I was expecting a large in euro sizes to fit. It shrunk a tiny bit from the first wash (I dried it flat), so the chest/waist are good now but there's still plenty of length in the arms and torso. So, size down 1 from your bike gear size.
You should probably get one of these before they 're gone.