The size is listed as 90cm, but when I tried to put it on my son who wears size 90 this year, it was too small and wouldn't fit, so I've listed it as size 80. I only put it on him once last year, and I was planning to use it again this year, so it hasn't been worn much. I think it's in very good condition. I think the pattern is suitable for both boys and girls. It's a romper-style swimsuit, so the stomach won't be exposed.