Birkenstock Yao Birko-Flor Birkibuc Mocha in very good preowned condition, no flaws. The svelte BIRKENSTOCK Yao successfully bridges the gap between thong sandal and sandal. The upper is made from the skin-friendly, hard-wearing synthetic material Birko-Flor® in a sophisticated nubuck look which boasts a texture and color that could almost be mistaken for real leather. - Anatomically shaped cork-latex footbed - Upper: Birko-Flor® nubuck - Footbed lining: suede - Sole: EVA - Two straps with an individually adjustable metal tongue buckle - Made in Germany - Size 40