Nikes. Sneakers. Jordans. Kicks. Boots. Yeezys. Whatever your favorite shoes are, they are a multi-billion dollar and worldwide industry.From those first Nikes made in a waffle iron to the most coveted Yeezys or Air Jordans, the conversation around sneakers has come a long way. They have evolved from just a simple utilitarian athletic good to a worldwide cultural and fashion phenomenon, that literally has its own stock exchange. Even high fashion designers are creating their own lines of sneakers with the traditional brands. And the drivers behind a significant part of this growth are the sneaker collectors, sometimes referred to as SneakerHeads.