Ninja Costume

My son wanted to have this costume for carnival. Well, I've ordered it out of hand, in the hope it fits. And I was not disappointed. It's a really beautiful costume. The fabric is indeed very thin, but I think that's not so bad. The children flit on their Carnival celebrations anyway just rum, so that they would sweat miserably in only "thicker" costumes.
What I do is always quite a shame find that in such, and even at this again, no shoes and gloves are. Where am I supposed to please find for such a costume fitting shoes ??? Then I am for a couple water shoes decided who is best fitted to do so.