Birkenstock Arizona Unisex Birko-Flor Sandal (41 N EU (US Men EU's 8-8.5, US Women EU's 10-10.5, Navy) Leather Made in Germany Heel shape: flat Birko-Flor - durable, synthetic upper material with a 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