I bought one of the Circo swim diapers last year at Target. I thought that reusable cloth swim diaper would be a great way to save a little money, since disposable ones are so expensive. This diaper is shaped like a regular swim diaper with elastic around the legs and waist. It fits snuggly so I thought it would hold everything in.
The first few times he wore it we didn't have any problems. I'd put it on under his swim trunks and we'd head to swimming lessons. On about the 3rd or 4th day I guess, I put it on him a little early and was carrying him around. The next thing I knew my side was all wet and we weren't at the pool yet! I thought maybe it was just a fluke and maybe I didn't have it adjusted the right way, so it leaked. The next time he wore it, it leaked again. After that we quit using them. They just didn't work like the disposable ones did. I hate to think what would have happened if he'd had a dirty diaper - Yuck! My advice is to stay away from the circo swim diapers.