This is a mermaid dress. It's a bit thick for summer, but you can wear it with short sleeves or long sleeves underneath, so you can wear it in most seasons. The size has faded and I can't see it, but I think it's a size L. Length is about 120cm. When worn by someone 170cm tall, it was a length that reached below the knees. I've worn it several times, but there are no visible stains or marks.