The suede lining and anatomical cork-latex footbed cradles your foot, while the EVA outsole provides flexible traction.With a patent leather upper featuring a single strap with a large adjustable buckle for a perfect fit, this Sandal pairs well with almost anything. Birkenstock Womens Madrid Bb Footbed Sandal Synthetic upper Slip-On Suede lining Anatomic cork-latex footbed EVA outsole.