Birkenstock Mayari in a Washed Metallic Silver color, made with the synthetic material called Birko-Flor. This is one of Birkenstock's most popular styles, known for its unique crisscrossing straps and toe loop design.  Key Features Color/Finish: Washed Metallic Silver, a faded metallic look with a subtle vintage effect. Material: The upper is made from Birko-Flor, a skin-friendly, durable, and easy-to-care-for synthetic material that is exclusive to Birkenstock. Footbed: They feature the signature anatomically shaped cork-latex footbed, which molds to the shape of the wearer's foot over time for custom support, lined with soft suede. Sole: The sole is made of lightweight and flexible EVA (ethylene vinyl acetate), which provides cushioning and shock absorption. Design: The Mayari has two adjustable straps, each with a metal pin buckle, and a fabric toe-loop for a secure and comfortable fit.