Birkenstock Gizeh Antique Brown Women's T-Strap Sandals Leather Rubber sole Gizeh Antique Brown Leather. Upper material: Oiled Leather - thick yet supple leather is breathable, durable and comfortable. Softens with wear. Footbed: The classic Birkenstock footbed - features pronounced arch support, a deep heel cup, and a roomy toe box. The footbed conforms to the shape of your foot. Sole material: EVA - flexible, lightweight, durable and shock absorbing. Made by Birkenstock in Germany.