The XL fits my boyfriend great and he wears a size 11 in US Men's shoes. The only issue is we couldn't figure out how to properly tie them as the laces weren't like normal sandals of this type (I always forget the actual name). Since the laces were just 2 giant loops the only thing we could do was tie them like normal laces, so at least he was in his Ichigo cosplay and the pants covered his ankles and the laces.