Shiny black vinyl string Exciting strap look at the front & back Soft & stretchy for a very comfortable fit Seductive straps and hot vinyl! The shiny black vinyl string Keira Lise from Obsessive has an exciting strap look at the front and the back. There is a decorative ring at the back. It is soft and stretchy for a very comfortable fit. 100% polyurethane, 95% polyester, 5% spandex. Important: There is a separate size chart for Obsessive.