This is a front-opening dress worn during ballet lessons. It's very convenient for regular lessons and recitals, as you can easily put it on over your leotard without messing up your bun. The length is approximately 63cm. It's labeled as 140, but I think it would be good for a child around 120cm (my daughter, who is of average height, wore it in her 1st and 2nd grade years). Please understand that there may be some wrinkles from being folded.