One of the most frustrating issues sneaker collectors experience is midsole crumble. This happens when polyurethane foam—used in many sneakers—starts to chemically break down over time. At first everything looks normal....
One of the most frustrating issues sneaker collectors experience is midsole crumble. This happens when polyurethane foam—used in many sneakers—starts to chemically break down over time. At first everything looks normal....
