Pros: Inexpensive, reliable
Cons: Not something you can pass on through multiple kids
I had chubby muffins, so I have no complaints about the fit. I found the Proraps fit well enough in a fluffy butt kind of way. These are inexpensive and reliable diaper covers. Never had a leak. Cleaning was simple enough and smells didn't build up any faster or slower compared to any other polyester/pul covers.
The diaper covers I had (2) lasted through 2 kids well enough; but not long beyond that. I was overall happy with the covers, but I also had simple expectations: That they be cheap & keep pee from going every where.
I would buy a Prorap again to try them out, it has been a few years. Currently though, I use Thirsties (as far as a PUL cover goes).