Only worn a handful of times around my house, no wear on the tread at all, these were too stiff for me and I’m not patient enough to break them in. Description taken straight from Birkenstocks website. Size 11W or 42UK Supremely comfortable with sophisticated, crisscross straps, the Mayari redefines the thong sandal with a single toe loop. Oiled nubuck leather lends a perfectly lived-in look to the strappy style. 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 Oiled leather upper, colors may vary Suede footbed lining helps keep you comfortable Lightweight EVA sole Two straps with adjustable metal pin buckles Made in Germany