These are brand new, never worn! They’re black vinyl or similar material. They’re gorgeous in the light, because they have an iridescent rainbow/ holographic look to them. The material does have give and will stretch by an inch or so. There are no tags, so unfortunately I can only give the measurements! Measurements: Laid flat Waist- 15” Hips- 18” Upper thigh- 8.5” Calf- 6.5 My measurements- Waist- 29” Hips- 41” Thigh- 27” Calf- 15” I will include my measurements, as I tried the pants on, but I’m not bold enough to wear them! The pants fit like a glove and are very comfortable. The material does not stick together when it touches. Please see the videos so get a feel for the material and fit! They are gorgeous!