Simple to use without any fuss on my Presta valves, good pressure, solid construction, cool looking. A no-brainer purchase.
It might not be the fanciest jersey out there, but like all Castelli products, it's solid and gets the job done. Nice, lightweight fabric. Not sure about all the comments on length/sizing. I'm 5'10", 148lbs, 30" waist, and a Medium works perfectly for me both in length and sizing. Overall, a great value for the price.