I wear a size medium in multiple other quality name brands (Assos, Pearl Izumi), but this shorts size medium was too tight. The chamois is excellent. The fabric seems a little less stretchy than others.
Love these cycling shorts! Loaded with all the best of Castelli's comfort and compression technology. The only concern I have is they seem a bit high waisted compared to earlier comparable Castelli shorts of equal quality. I wash them in cold water and medium spin after each ride and they seem to last well over 300 long rides. Comfort worth the price!