This Gizeh flip flop is a classic among Birkenstock flip flops.
Gizeh Mocca is made of brown-green Birko-Flor with nubuck look, a very soft material that reduces the risk of irritation and blisters. The orthopaedic foot bed provides support and relieves the foot. It prevents back, knee and foot pain. Thanks to the toe piece and the adjustable buckle the Gizeh flip flop fits tightly to the foot while ensuring you get optimum support from the foot bed.
Birkenstock uses German shoe sizes. You probably have the best fit with a smaller size than the one you usually take in other shoes or sandals.