This was a gift. I don't have any Ronni clothes, so I'm not sure about the M size, but it was bigger than the 100 size my child is currently wearing, so I chose 120. It doesn't seem to have any damage, but it does have a used feel. The name of the previous owner is written on the inner tag. It's the part I'm holding down with my finger. I'll give it to someone who doesn't mind. (^^)