Look under the drivers seat and you should find a tag or maybe a slip of paper that is tucked between the springs and seat cushion. This should give you all the information to order replacement covers from flex steel. If not under the Drivers seat check the Passengers.
I just placed a order for two seat cushion covers and one arm rest cover. The seat cushions were $520.00 each and the arm rest $120.00.
Look for a 4 to 5 week manufacture time plus shipping time.
I have not received mine yet so I can't say how they go on. Others have said quite easy to install.
Jerry & Anna
Retired Navy
07 Phaeton by Tiffin 40 QDH
2013 Ford Edge