It was upstairs that we found them, lurking in a darkened corner… their covers dark, stained, like thick, waxy skin. The zips, like bursting sutures, starting to come undone: from outside, we wondered, or from within? And exactly what was it, waiting silently, still, in the dark for us?
Timothy Moss 
Oh how evocative!! I’m convinced there’s a person or a creature of some kind underneath the cloth – particularly of the middle one. Very spooky.
Or are they monks, shuffling off to prayer?