Parts bulging into a hole or parts smashed against a seat.... I'm thinking the parts shouldn't have so much pressure on them to make it an issue if your sit-bones are sitting right on the appropriate spot and the seat is tilted at just the right angle to make that happen. So far, I haven't been able to get my seat to that "sweet spot." Parts are a pain - we ought to be able to zip them up into a pocket when we ride! I don't even want to think about what happens to boy parts.