Birkenstock Santa Ana Black Suede Flat Shoe Hard to find! Sold out everywhere Size 36 (US 5-5.5) The Santa Ana is an interpretation of the popular ballet flat, with the classic BIRKENSTOCK footbed. The shoe has a feminine look and offers a secure fit thanks to its elastic straps across the instep. The shoe is ultra lightweight and flexible. The upper is made from high-quality nubuck leather. Anatomically shaped cork-latex footbed Upper: nubuck leather Footbed lining: suede Sole: EVA Great condition, little to no wear. Comfortable and stylish.