My 7 year old who’s about 53 lbs typically wears a XS or S, if he needs more length, so I ordered a Small, to be on the safe side. Should have read the reviews because it is so small that it’s unwearable. The hood opening is tiny, and has no stretch, so we couldn’t get it over his head. Ordered a Foxy Hoodie in Medium and it fits, but probably only for this year. Would recommend going up a few sizes up is you want it to last a couple seasons.
The quality and printing is really great, but just so small!