adidas Originals - Gerd Muller II (Blue/White/Powder Red) - Men's: Who is Gerd Muller? Whoever he was he inspired a hot boot. This is an updated version of the Gerd Muller boot first available in the mid 70s. It has a cleat-like outsole designed for street use. This shoe has a supple leather upper combined with a cushioned midsole wedge of EVA and a colored rubber outsole.