Essentially, adult bootees. They're made from fleece and suit my lifestyle perfectly; I hate wearing shoes indoors and they keep my feet warm, and can double as socks. The first pair I bought were so brilliant, I bought another four. (Which were actually of inferior quality to the first pair, but I didn't notice at first.)
Now, they're all starting to wear out, but the eBay company seems to have gone bust, so I can't buy more. Some of the seams are going, one pair has worn through... I'm not a sewing-person, but the bootees are very simple, with 4 parts. Even I could make them, for myself, handstitching; would it be very wrong to deconstruct the most worn-out pair, in order to make more for myself?
(This would most deffo not be something I would sell, I have Repetetive Strain Injury in my wrists so couldn't make them for others)