From Birkenstock, the Women's Gizeh Rivets Suede Thong Sandals feature: Suede upper: Split suede leather with a napped finish Rivet embellishments 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. Sizing Notes: Birkenstock footwear is made in European whole sizes. The style selected is a Birkenstock regular footbed that will fit most medium feet.