Black leggings

I have a pair of black leggings that aren't like ordinary leggings. They are not cotton or spandex or fake leather looking leggings. These are super soft silk like black leggings. I wish I could tell you the exact material but I ripped the tags off before I even wore them! They have a nice stretch to them and because of the material I would say these are perfect for either a night out on the town or I suppose since they are just a solid black you could dress them down to make them more casual.