NIB Birkenstock Arizona Big Buckle Rivet sandals in Midnight Velvet, size 39 (US 8). It features a solid midnight blue color with a leather lining, adjustable strap, and buckle closure. Made in Germany, these sandals have a flat heel style and a rubber outsole, providing comfort and support for unisex adults. The velvet upper material and leather insole add a touch of luxury to this classic Birkenstock model.