The fabric is very soft and light - it’s almost like wearing nothing. They’re ever so slightly sheer, if you’re looking for casual wear leggings you’d need a long top. VERY comfortable and airy.
I have owned many leggings, mostly bought in error from department stores, and used them for dance. The construction and fabric of these leggings is far superior for real movement and are lightweight for humid dance studios. They are also soft and nice with mini-dresses!