Birkenstock - Arizona Patent. Color Patent Purple Fog Birko-Flor™. Low Stock. On sale for $70.40. MSRP $110.00.. 4.2 out of 5 stars1 left in stockBrand NameBirkenstockProduct NameArizona PatentColorPatent Purple Fog Birko-Flor™Price$70.40MSRP: $110.00