Birkenstock Salina Women's Slides Black Birko FlorThe Birkenstock Salina is a women's strappy slide sandal with two adjustable buckle straps. These Birkenstock Salina Black Birko Flor Women's Sandals have the following features: Birko Flor upper is made of acrylic and polyamide felt fibers with a leather like texture Two buckle closures ensures a secure and fully adjustable fit Raised toe bar is designed to encourage the natural gripping motion of your feet, exercising your legs and aiding