Available in an array of fun colors, the iconic Gizeh thong sandal is fitted with the classic Birkenstock footbed and topped with a fully adjustable upper of Birko-Flor, a soft fabric with a smooth leather-like finish. The toe piece is made of flexible resin, anatomically designed to fit comfortably between the toes, and the soft suede insole absorbs moisture and feels great against the skin. Available in an array of fun colors, the iconic Gizeh thong sandal is fitted with the classic Birkenstock footbed and topped with a fully adjustable upper of Birko-Flor, a soft fabric with a smooth leather-like finish. The toe piece is made of flexible resin, anatomically designed to fit comfortably between the toes, and the soft suede insole absorbs moisture and feels great against the skin. Pre-order this style today! Add to Shopping Bag to view approximate ship date. You'll be charged only when your item ships. Color(s): onyx. Brand: Birkenstock. Style Name: Birkenstock 'Gizeh' Birko-Flor Thong. Style Number: 37565 7.