From Birkenstock, the Women's Gizeh Big Buckle High Shine Thong Sandals feature: Natural leather upper with a high shine finish Thong construction Slip on design with adjustable buckle strap Classic contoured cork footbed supports the arches of the foot Deep heel cup for all day comfort EVA outsole Flat heel Imported. Styling Notes: Birkenstock footwear is made in European whole sizes. The style selected is a Birkenstock regular footbed that will fit most medium feet.