Birkenstock Soft Footbed Natural Brown Leather Arizona Sandals Birkenstock Arizona Natural Brown Real Leather Upper (not synthetic); Unisex Sandal with Soft Footbed for the ultimate in comfort. The Birkenstock Soft Footbed features an extra layer of cushioning foam built into our legendary footbed. A unique foam layer built from millions of microscopic air bubbles is inserted between the top layer suede footbed liner and the layers of cork and jute that make up the rest of the footbed. Ensures a cushioned yet firm foundation for immediate comfort and full arch support. Real leather upper in natural leather, brown.