Authentic. Brand new, never wore. Size 36.5. I bought these for my wedding and last minute decided to get the ones with the blue buckle, being way passed the return window. Comes in original box/packaging and dust bags. Upper: 68% viscose, 32% silk. Sole: 100% cow leather. Lining: 100% kid leather. Heel measures 115 mm. Italian sizing. Made in Italy.