I'm selling this because I bought it with a friend but haven't had a chance to use it! This is size S-M. Mermaid bodysuit Recommended for parties, cosplay, etc. Almost new! I'm selling it at a significantly reduced price because I've worn it once! I am a woman, approximately 155cm tall. My waist is 65cm and it still has some give, so it should fit up to about 75cm!