It's a nappy pant so the same as a proper nappy not like a Pull Up.

I have used them for DD before but the only issue we had was that if they are quite full then they tend to fall down due to the weight in them (but this is an issue with most nappy pants anyway). Now DD is day tt'd we put her in a pull up at night time only so she feels the wettness if she wets overnight and it wakes her up to go to the toilet, luckily for us she has been pretty good and has recently been waking before the accident has occurred. Depends on your circumstance though, if you have a night wetter who sleeps heavily as well, you could give the Aldi Nappy pants a go.