The fabric and the chamois of this bib is the thinnest that I ever saw, but its not transparente and is very conformable. I used it in 3 hours rough mountain bike without any troubles. I spare it to use at races. As other italian brands you must go one size up.
An important tool to every ciclist! Turns a raining/wind day in a very pleasure day to ride! It's true for the size, with arms longer than the usual, as other norronas jackets, but is ok for me! It's light and with nice fit, very comfortable to ride with.
Is Very good hidratation pack, Very light and confortable. But is smaller than the old model, so, is not good for long rides or when you have to carry more itens. I recomend for racedays or short rides!
I agree that is not the coolest, if you want the coolest, you have to buy the Castelli Seamless model. But the Sugoi baselayer is more confortable and works better when you are starting your trainning early in the moorning. It maintain your body temperature and doesnt be desconfortable when the day been hotter. I love my One.