I have bought this thing a month ago:
It is so far best dust cleaner that I have ever used and all was well until I left it out of its package for half day. Then it became sturdy and could be torn apart, less sticky and flexible which I video'ed here.
Can this item be restored back to fully functioning state as it was before? Maybe it just became dry and I should put it in a place with moisture?
Since all was in Chinese, I also do not know the storage conditions that must be met.