New in Box Birkenstock Arizona birko-flor sandals in blue/Navy Unisex size 37 The BIRKENSTOCK Arizona is a genuine classic that has been delighting both men and women for decades. This simple sandal with two straps stands for timeless design and has long held cult status thanks to its comfort factor. The upper is made from the skin-friendly, hard-wearing synthetic material Birko-Flor®. Anatomically shaped cork-latex footbed Upper: Birko-Flor® Footbed lining: suede Sole: EVA Details: two straps, each with an individually adjustable metal pin buckle “Made in Germany” Size is 37 REGULAR I am woman’s size 8 (US) and this fits perfectly. US woman size 6-8 can fit in them in my opinion. Please go to Birkenstock.com for size reference.