1940–1960: After the Second World War, the designs of the football boot changed dramatically. The South Americans first wore lighter and more flexibles boots, which later came into the attention of the world. This design was focused on increasing good control and better kicking power rather than a more protective boot. In 1954 Adi Dassler introduced screw-in studs which gave the German team a tangible advantage during a rain-lashed World Cup that year. That Dassler was the first to come up with screw-in studs is disputed by his older brother, Rudolf Dassler, founder of Puma.