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 reduced price because I've worn it once! I am a woman about 155cm tall (approx. 5'1"). My waist is 65cm (approx. 25.5 inches) and it still has some stretch, so it should fit up to about 75cm (approx. 29.5 inches)!