I bought these tights a few days ago, and when I went to try them on, they were too small and were a bit see-through. I bought a size medium, which is the size that I always buy, and these do not fit. I would recommend ordering a size larger.
I started purchasing Wearmoi for my sons the beginning of this summer (2012), and the quality is AMAZING! It is a cotton blend, so there is much breathability in the fabric, yet just enough elastic to give a nice smooth fit. The tights are thick enough to not be see-through, yet thin enough to breathe. The cost is worth it, as you will not be replacing these any time soon. After 20 years of buying and replacing dancewear, finally something that is of lasting comfort and quality! thank you!