Birkenstock Women's 'Arizona' Stylish 2-Strap Birko-Flor Sandals, Shiny Snake Arizona Women's Fashion Sandals. Imported Birkenstock's classic two-strap sandal offers comfort and style for everyday use. Birko-Flor upper is made of non-leather acrylic and polyamide felt fibers. Original Birkenstock footbed features pronounced arch support, deep heel cup, and roomy toe box. Classic cork footbed (not soft footbed) molds and shapes to your foot for incredible, long-lasting comfort. White EVA sole material is flexible, lightweight, durable and shock absorbing.