Authentic Birkenstock tag in blue. Made in Germany. The Birkenstock® Gizeh - Birko-Flor™ & Birkibuc™ is perfect for warm days and evenings. Easy care Birko-Flor™ upper in a classic thong silhouette with an adjustable buckle for the perfect fit. Upper is made of acrylic and polyamide felt fibers with a leather-like texture on top and a soft fabric underneath against the skin. Great gift for the holidays.