The BIRKENSTOCK Siena boasts a refined appearance. Crossed straps give the sandal its unique and special look. The tonal footbed rounds off the shoe’s look of sophistication. The upper is made from high-quality nubuck leather.Anatomically shaped cork-latex footbedUpper: nubuck leatherFootbed lining: microfiberSole: EVADetails: two straps, one with an individually adjustable metal pin buckle; tonal footbedMade in Germany