Welcome to Dr. Björn's Auto!
Behind the seat you can get very practical storage with this organizer. It is helpful for all the items which are easily left all over the place when you are camping. This one is made with a felt fabric.
Note that for use on the T4 (Eurovan) seats, a tidier installation is possible by: 1) pushing the lower straps with the hooks between the backrest and seat cushion, 2) pass these straps through the "armrest" straps, and 3) wrap the lower straps with hooks once around the plastic covered hinges at the base of the backrest, and 4) hook the ends into the outer edges of large lower pocket of the organizer. You can also wrap them around the hinge covers and hook the elastic strap into its edge. See photos.