We really love these jeans.  I have a slim 5 year old and these fit nicely.  I'm surprised a bit that the waist is still so wide considering they're slim jeans.  We still had to use the adjustable waist considerably to get them to stay up.  I love that they have a fake button snap.  My son still isn't able to get buttons undone, so this helps a lot when he needs to use the bathroom.

The fabric is nice and sturdy, always a plus with active kids.  It's a bit stiff at first and took a few trips through the washing machine to soften up.  We really like them!