Ader Error Collection – BIRKENSTOCK。Birkenstock ADER ERROR Arizona Tech Birkenstock Arizona Tech X Adererror Black 2- buckle slide on sandals. Size EU42 EU 42 pre-owned in good condition. see all photos for signs of wear. note one of the right buckles (the end strap) is a little banged up-pictured. does not affect the functionality/adjustability of the straps have been leather cleaned and conditioned. \"Technical sandals, pebbled-leather, nubuck, brand logo, solid color, leather lining, buckle fastening, round toe, flat, rubber cleated sole, contains non-textile parts of animal origin. Suede and cork-latex footbed High-tech buckle closure inspired board wear Nonslip EVA outsole Cobrand silicone label\"