GoodNites underwear made for nighttime would work out. It was a smart move. He has an overnight accident maybe a few times a week and thankfully there have been no leaks at all. We ask him each morning if he is wet or dry and he always says "dry". I am thinking the absorption level is higher than a diaper or trainer since they are designed for older kids. Hopefully he will grow out of this stage but for now I will keep a pack of GoodNites on hand for nighttime.
This is an unsponsored post and I am simply just sharing my thoughts on a product that worked well for us.