Tom Williams/CQ-Roll Call, Inc via Getty Images
Jannese Torres
Tim Knox; iStock; Insider
Tim Knox; iStock; Insider
Amr Bo Shanab/Science Photo Library/Getty Images
Lola Banjo
Anna Kim/Insider
More than 50 billion shoes are made every year. The biggest manufacturers, like Nike, Adidas, and Asics, make them durable enough to run hundreds of miles. But this also makes them incredibly expensive and difficult to recycle.
Jarvis Releford