Blended with cotton for better breathability.

Tight at thigh (they won't fall down).
Loose at ankle (stylish and comfortable).
Elastic at top and bottom. Shockingly soft. 

*Model is 5'5" and shown wearing XS/S.

**we recommend buying size M/L only if you are 5'8" or taller or have larger-than-average legs (in which case you can roll the top of the leg warmers if you're shorter).

The XS/S size is very forgiving, in terms of girth. It fits, for example, male dancers of 5'9" with muscular legs.