Leather, suede, nubuck or microfiber upper Two adjustable straps with buckle closures Fit Tip: Regular widths fit best for Men; Narrow widths fit best for Women Birko-Flor upper has a smooth leather-like finish and is lined with a soft fabric for comfort Go for iconic casual style with the Birkenstock Arizona sandal. The original Birkenstock design, this casual sandal features a leather, suede, nubuck or microfiber upper with two adjustable straps for a snug fit. A suede-covered footbed features layers of cork and latex to mold to the shape of the foot. The Birkenstock Arizona sandal has an EVA sole that is lightweight, flexible, durable, and shock absorbent.