From Birkenstock, the Arizona Oiled Leather Big Buckle Hardware Sandals feature: Oiled leather upper features a soft, distressed leather that emphasizes a handcrafted and natural look (variations may occur) Adjustable big buckles Slide on Unlined construction Birkenstock contoured cork footbed supports the arches of the foot and the deep heel cup cradles the foot for all day support EVA outsole Flat heel Imported. Styling Notes: This style uses an antique oil finish that allows the natural character of the leathers to shine through. This may result in slight color variations from pair to pair. Birkenstock footwear is made in European whole sizes. The style selected is a Birkenstock narrow footbed that will fit most medium feet.