Birkenstock Boys Sandals. SKU: 1023408. Color: Faded Khaki. Birkenstock Kids Faded Khaki Arizona Double-Buckle Sandals. This pair of Arizona sandals features a cork-latex footbed, a slip-on style, an open toe, a branded insole, two straps, a double buckle fastening, logo-engraved buckle, and a flat rubber sole. Please visit the brand website for sizing information.