This little video ( ) shows 13 pairs of brand new or little used Clarks shoes after they'd been in the wardrobe for a while, unworn - an incredible scene of unaided, rotting, disintegrating shoes.
Worse still, Clarks across the world are washing their hands of the problem, offering trifling amounts of compensation (just a few pounds) if they're really pushed, and hoping people will forget about the problem.
Clarks are cheaply made imported shoes (UK manufacturing ceased long ago) sold at high prices to people who trust the name - in reality you can't trust the name (or the shoes) at all, because in the event of a problem like this they just don't want to know.
Check your cupboards and wardrobes (and your partner's) - those nice new shoes you put away for later are probably rotting in their box!