The Arizona - Narrow Fit The Arizona style has become a symbol for the Birkenstock brand world wide. Whether at work or recreation, this versatile classic Birkenstock is a favourite. The Arizona has for years been one of their most popular models of sandals worldwide. The variety of available materials and colours make the model a sandal for all walks of life. Premium Materials Every pair of Birkenstocks is made from the highest quality materials. Birko-Flor Upper / Soft Footbed Birko-Flor is the Birkenstock trade marked synthetic leather. It is a skin friendly, easy care fabric. Clean with a damp cloth. 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. This ensures a cushioned yet firm foundation for immediate comfort and full arch support, built on the most solid foundation in footwear.