I got these and some red slippers with a face and ears on them, but he prefers these. They are easy for him to get on, they stay on when he's running around and the soles are thick enough for him to run outside with them on. I think they are a little expensive for kids slippers, but nice slippers are so hard to find for this little one with his big, wide feet.
He wears a 9 shoe and I got these slippers in an 11. They are big and he'll be able to wear them for awhile, but he can wear them now too, even though they are big. Some slippers, if they are too big, they fall off when he's walking around, but not these.