Sandals by Birkenstock, Grained leather upper, Adjustable buckle straps, Cork latex footbed, Shock absorbing EVA sole, Treat with a leather protector, 100% Real Leather Upper, Label on box may show UK size to be half a size bigger, Order the size you normally take. Johann Adam Birkenstock hailed from the German village of Langenberg and first registered himself as a shoemaker in 1774. With his grandson Konrad picking up the family business, Birkenstock have been making their flexi-soled sandal-shoe hybrids ever since. Go classic in two strap Arizona sandals or break out a leather clog or Boston mule.