My grand-son was in the process of potty training but was not grasping the idea of not going in his pants. So, knowing he would be going to pre-k in the fall, I bought these for him to help him feel like a big boy and hopefully help him understand the concept of going to the bathroom in his potty chair rather than in his pants. Needless to say, he was potty trained in no time.  It didn't take long for him to ask his mother to wear them with the promise of using his potty chair.