I sweat profusely when it is 85 deg and humid when riding hard. Even my Rapha Classic bib shorts would be soaked and starting to rub me uncomfortably. By the Superlegerra has been fantastic, breathing very well and not accumulating sweat. I wear them now for temperatures over 75 degrees.
The Superlegerra jersey is an excellent match, much more comfortable than my Rapha Flyweight jersey.
The only Castelli issue is sizing. The XXL bibshorts and jersey fit my body very well, but note that I am 5' 11", 165 lbs, with a 42" chest, 34" waist, and skinny legs.