I bought these underwear for potty training my 17 month old. He wears a size 2T, and is 28 lbs. These underwear fit him properly. The graphics on them are fantastic, plus my husband is a huge Thor fan, so they get a huge thumbs up from him.

The material seems to be a bit rough, even though it's 100% cotton, so I think it's lower quality than other underwear. Also, there is an opening in the front, which to me seems useless for a 2 year old, since I assume that most of them would pull their underpants down when they go potty.

In summary, I think that these underwear would be great for kids who love superheros, and the Superhero Squad, but for parents who are looking for higher quality underwear, I would be looking elsewhere.