These are baby swim diapers. I used these because I didn't want to use disposable ones. I think they can also be used for potty training. I used them because they can be washed and reused, which is good for the environment. They are sold as a set of two. The manufacturers are different, and the sizes are probably around 70-80, so I think you can use them for a long time. The pattern with the sea creatures has a name stamp on the tag, so I will cut it off before shipping if that's okay. I've used them several times, but they are still in good condition, so I hope you will use them. Thank you.