Even though the advertising depicts women with not a small behind, I found that the pants were a bit short in the rear when sitting on the bike, not terrible, but could be better. And I don't have an unusually large butt. Also, when on the bike there was quite a bit of fabric wrinkled up in the front. Like I said, maybe it fits someone perfectly, just not me. It's not so bad that I want to send them back. Also, I wear Forma boots which are pretty tall and fitted to my leg, so those big zippers have to be arranged perfectly inside the boot so they don't rub. Again, not something I will send the pants back for, but smaller zippers would be appreciated. With my regular riding "tennis" shoes, they're fine. In addition, the velcro on the Forma boots tears the fabric of the pants if it contacts them, which initiates a pretzel-like contortion of my arms to keep it from doing that while putting on said boots. Sounds like a lot of issues, but you asked. :)
Overall, I like the pants and won't be returning them.