Picture this scene. The weather's finally nice enough that you can start bringing some new sneakers into your rotation, maybe even break out a grail or two for the first time in months. You go for the one you've been saving for this very moment—in this case, let's say it's a pair of "Oxford Tan" Yeezy Boost 350s—only to find that they've been ruined by mold.
That's what happened to Danish sneakerhead @peterfalktoft, who discovered that the suede panels of his Yeezy Boosts had become covered in a spotted green mold after just three months in storage. He didn't say much else about how it happened, but in cases like this, it's usually a matter of improper storage conditions (e.g., humidity, moisture) rather than a defect with the materials themselves.
Let this be a reminder to always keep a close eye on the space where your kicks are stashed, whether it's a storage unit or a room in your house. Better yet, just wear them and avoid the headache altogether.