Birkenstock Unisex Arizona Mocha Brown Birko-Flor Sandal, Mocha (10-10.5 US Women - 41 M EU) Birko Flor Arizona Sandal from Birkenstock is made of soft acrylic and polyamide felt fibres. This iconic two-strap style, the Birkenstock Arizona Sandal, is known for being the epitome of comfort. Both straps have buckles for a fantastic fit. The suede lined, contoured footbed will mold to the shape of your foot creating a custom footbed that supports and cradles you each and every step. Flexible EVA outsole offers lightweight, shock absorbing support with lasting durability. Made in Germany.