Tried all 3 sizes of caps that came with the pro and none fit right so I was frustrated till now. I love them just as much as I did the first pair, they’re so comfy! She was very impressed with the sound quality and noise cancelling (even forgot I was home for a second - gave her a good scare haha). It took a little while, but they fit true to size now that theyre completely broken in, and he wears them all they time. Going to keep them both. My other only complaint is the instructions were not very clear and it was missing a few of the pre-drilled holes and holes for the locking parts. So no big expectations. Lamentablemente tendremos que devolverlos. I will be returning if at all possible I can imagine, being fabric that it would get even worse over time.