Birkenstock Arizona BF In Stone Regular Fit combines the classic two-strap Arizona silhouette with a Birko Flor upper for durable, everyday wear. Product image is indicative. Key attributes: Gray | Stone | Birko Flor | Durable upper | Easy to maintain | Two adjustable straps | Signature buckles | Customized fit | Provides stability and support | Two-strap silhouette | Open toe | Flat sole | Dimensions & fit: Regular Fit | Composition & care: Upper: Birko Flor (synthetic material) | Wipe clean with a damp cloth. Allow to air dry away from direct heat.