Re: 4 yo night options?
I use Flip trainers with my nearly five year old. I have to double up the inserts or he leaks (I've also used a flat and one of their inserts and it worked just as well). We use the disposable insets on the road, and they work very well.
Mama to 2 boys
8 and 5, holding down the fort for my Navy submariner
, and expecting baby #3 in June.