Birkenstock Papillio Gizeh Flex Platform Sandals. A flexible platform sole takes the Gizeh's classic design to new heights—and your style along with it. Durable Birko-Flor® and a microfiber footbed lining gives you an elevated vegan option that stands out from the rest. This Papillio By Birkenstock style rests on a contoured footbed designed to support you through it all. Contoured cork-latex footbed. Birko-Flor® synthetic leather upper. Microfiber footbed lining helps keep you comfortable. Platform EVA sole; 30 mm. Two adjustable straps with metal pin buckles. Imported.