I sell them so may be a bit biased, but I also use them on my toddler. I love them, love the bright colours, but downsides would be that they are lower rise than some nappies and ermm, can't think of any other downsides.. I've always got a good fit but I didn't start using it until he was about 6 months. The "poo fence" is a bonus for newborn poo apparently. They are very well made and they are lovely and soft around the legs (some other brands have started to rub on him).