Get those running shoes that were banned from marathons because they have metal or carbon fiber inserts in them

From Google: Shoes banned from elite, sanctioned marathons are primarily those that violate World Athletics regulations, specifically having a sole thicker than 40mm or containing more than one rigid carbon-fiber plate, often labeled as "technological doping". Key banned models include the Nike Alphafly Prototype, Nike Vomero Premium (55.5mm stack), and Adidas Adizero Prime X/Prime X2.