Sandals by Birkenstock, Slip-on style, Buckle detail, Moulded footbed, Textured tread, Flat sole, Get low, get low. 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. Please Note: The sizing on this brand comes up larger than average, it may be advisable to order a size down.