Gizeh thong style from Birkenstock. Metallic blue/black upper with toe post. Contoured cork footbed for support. Easy slip-on casual sandal. These are used but the cork and attachments are in good shape! No tears or stains! These are a European size 40 which is a women's size 9, U.S. The modern thong sandal from Birkenstock. The Gizeh is an iconic classic with signature support and a refined, minimalist style. Shown in Birko-Flor®. Made in Germany Birko-Flor® – durable, synthetic upper material with leather-like finish and soft backing Contoured cork footbed conforms to the shape of your foot and features pronounced arch support, a deep heel cup, and roomy toe box; lined with suede Lightweight EVA sole for cushioning and shock absorption Avoid extreme heat