I bought these for casual wear and I love them!  They are not uncomfortable on the skin at all and have a nice sheen to them, but are NOT tacky shiny.  I have hand washed them once and they did not fade, although some color came out in the cold water. They are perfect with sweater dresses, tunics, cardigans, etc. and are a great alternative to plain leggings when going out.  They are thin and sleek as well.