Birkenstock BIRK-051751-Blue-46MUS Birkenstock Arizona Leather Sandals Unisex Style How to measure your foot length Stand with the heel to a wall and put a measuring tape under your feet Read off the measured foot length in millimeters before your longest toe If you are between two sizes, choose the next higher, because feet are minimally greater under load This is the real deal. Cork, leather, a buckle or two: these are the simple ideas that have made feet happy for over two hundred years, and that's the original Birkenstock. These shoes are made in Germany since 1774. No smoke, no mirrors, and no gizmos are needed. You walk, the shoe molds to your foot. The shape of the Original Birkenstock Footbed enables body weight to be distributed evenly over the whole foot, providing it with optimal support.