Reigning Ironman World Champion Sebastian Kienle talks about how important the technical development of the Ironman equipment has been for the progression of the sport and explains the key parts of his equipment: the neoprene suit for swimming, the bike and the helmet for cycling and the shoes for running. He shines a light on how material changes and advances in technology have helped to improve the athletes’ performances and we also join him at the Mercedes Benz wind tunnel, where aerodynamics tests help him to optimize his bike performance.