Birkenstock Mayari Sandals Size 40 Supremely comfortable with sophisticated, crisscross straps, the Mayari redefines the thong sandal with a single toe loop. The style comes in smooth Birkibuc® for a brushed, nubuck-like finish. Complete with classic BIRKENSTOCK design elements, like adjustable buckle closures and a contoured footbed for the ultimate in support. • Contoured cork-latex footbed creates custom support with wear • Birkibu synthetic leather upper • Suede footbed lining helps keep you comfortable • Lightweight EVA sole • Two straps with adjustable metal pin buckles