I've been a Castelli fan for decades and this short is definitely the nicest so far. A tad on the spindy side but well worth it. Per usual Castelli sizing I am 5'9 175 lbs and usually take a size L in most pants but for Castelli I bought size XL and the fit is just right.
Pricey shorts, worth every penny though when riding for hours on end. The new Progetto X2 pad is the most comfortable pad of any short. It looks and feels like velvet and is of the highest quality.
I liked the older model Progetto X2 pad and the newer model is way more plush.