In my experience Castelli is for short people, at least their bottoms. I have one aero jersey (small) that fits exactly as the size chart indicates but two totally different-fitting bibs and tights in size medium, neither of which fit well because they're designed for shorter people (I'm not exactly tall - 5'9”). On the bibs, the straps are way too short. On the bib tights, the straps are fine but the legs are simultaneously too short and yet the calves are too loose. I'm very unimpressed with Castelli bottoms (don't like their chamois either).

Love their aero jersey, though.