This Milano Black is make entirely of black natural leather. the three adjustable straps with buckles ensure that the foot sits very secure and stable in the sandal. Of course, this sandal has the comfortable cork foot bed typical of all Birkenstocks. This sandal is also available in other colours in Birkoflor, a typical Birkenstock material that adapts to the foot more quickly and is soft to the touch. Birkenstocks have a large fit. Usually you need a smaller size than you normally take in other shoes.