Sneakerheads have been struggling to keep their OG kicks in decent condition due to their crumbling soles. WIRED recently took a look a the phenomenon of sneaker decay. The main culprit is Polyurethane (PU), which can turn yellow leading the sole to crumble and detach from the upper. Nike and adidas used PU on most of their sneakers, so sneakerheads are stuck with a limited shelf-life for their precious kicks. The article concluded that there isn’t much you can do to preserve older sneakers. So rock your kicks and enjoy them while they last. Check out the full-length article online at WIRED.