From Birkenstock, the Women's Santa Clarita Nubuck Leather Mary Jane Flats feature: Nubuck leather upper Mary Jane strap with adjustable buckle closure Suede footbed lining Removable, anatomically shaped cork-latex footbed that offers extra cushioning Flexible EVA outsole Imported. Sizing Notes: Birkenstock footwear is made in European whole sizes. The style selected is a Birkenstock narrow footbed that will fit most medium feet.