Amazon.com | Birkenstock Unisex Arizona Sandal,Mocha 。. The Birkenstock Arizona Men Size 10-10.5 Mocha Birkibuc Sandals are a stylish and comfortable option for casual occasions. These sandals feature a solid brown color with a synthetic upper material and leather lining, providing durability and a touch of luxury. The adjustable buckle closure and standard shoe width ensure a perfect fit, while the slide style adds a modern twist to the classic design. Perfect for summer and spring, these Birkenstock Arizona sandals are a reliable and fashionable choice for men.