The back of the chair could be opened via a zipper. Opening the chair however released quite a bit of white powder. At first I a.s.sumed that it was just flour. It definitely wouldn't have surprised me if that was the secret to the chair's comfiness. That's when I noticed how there were also pieces of white fabric mixed in. The fabric held it's shape and could be held, but as soon as pressure was applied, it basically disintegrated.

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So in conclusion, fabric can deteriorate even without direct sunlight and or contact.