The Birkenstock DERBY Vintage Shoes are a stylish and comfortable option for women new in box. vintage stock from early 2000. size european 40. US size 8.5. Made in Germany waxy leather in a classic walnut color, these flat shoes feature a round toe and leather lining for a high-quality finish. Perfect for casual occasions during the summer, fall, and spring seasons, these shoes offer a versatile style that can be worn daily. With the trusted Birkenstock brand and a solid design, these shoes are a timeless addition to any woman's wardrobe.