Blue Suede The legendary two-strap design from BIRKENSTOCK - the Arizona. Iconic style complemented with the signature comfort of the BIRKENSTOCK footbed. This version also features an additional foam layer, the soft footbed offering extra comfort for feet all day long. The upper is made from super soft suede. I ordered the wrong size and used them until I decided to order the right size. I loved them, they are very comfortable and were only used indoors in my apartment.