I used them prior to our potty training weekend with our son, and they seemed to work great. I wanted him to get used to the idea of pulling something on and off like you do with underwear. Though he knew they were diapers, i just wanted him to get used to that idea. Never had any problems with leaks, but didn't used them overnight, still used the huggies overnight diapers at that time. Not sure how you are planning to potty train, but we used the 3daypottytraining.com e-book. my little guy is 2.5 yrs old and we did it with him, and he is in underwear and doing really well with it. good luck.