Birkenstock's 1774 History based on its intention, shoe master Johann Adam Birkenstock's bond to the craft. It started with my light. Johann Adam's great grandson Konrad Birkenstock, including the shoe craft was passed on from generation to generation. The new ideas developed by Konrad's visionary perspective allowed him to produce and sell flexible foot-based shoes. These new ideas developed Konrad as the inventor of Footbed.