Nike's Dirty Triple White Air Force 1 Low is one of the biggest viral sneaker stories of the year and to some, it's the very antithesis of what a pristine all-white Air Force 1 is supposed to be.

Some sneakers, particularly those of the vintage variety, completely crumble at the midsole. This is due to a chemical process called hydrolysis, which breaks the bonds in molded polyurethane ...