Is there such thing as a factory vinyl seat/bed covers?

I just purchased an 86 Westy GL that has what I thought was a recovered rear seat and bed
with brown vinyl covers, until I realized that the covers were removable and the seats
were in mint condition underneath!

The heavy vinyl covers have all the correct factory pleats, and the rear bed portion has a
zipper for the mattress to be inserted.  The rear fold down seat portions are exact
replicas of the originals that are underneath with velcro around the edges...

Anyone ever seen anything like this???

If so, are they worth keeping??

Thanks.

Dan
Manassas, VA
82 Diesel Westy
86 Westy GL