The Birkenstock Arizona Big Buckle in Sandcastle is a modern update of the classic two-strap Arizona silhouette, featuring oversized metallic buckles for a bold aesthetic. The upper is crafted from soft nubuck leather that develops a natural patina over time, paired with Birkenstock's signature anatomically shaped cork-latex footbed for long-term comfort and support. A suede lining enhances softness against the skin, while the lightweight EVA outsole ensures flexible, shock-absorbing wear. Made in Germany, this model blends heritage comfort with a contemporary statement design.