The most common one on the market is pure cotton caleca (spandex), but modal is the most comfortable one to wear. Mercerized cotton is ok, but it is a little thicker than modal! As for the price, it depends on where you bought it. Ordinary underground shopping malls are basically around 20-50, and the brand price of regular shopping malls is generally around 50- 150.
The most common fabrics for leggings are as follows:
1, modal
2. Velvet
3, milk silk
4. Polyester
5. stretch cotton
When the temperature is low, modal fabric leggings are warmer, and milk silk should be chosen in summer, which is very breathable.