Hi mamamaya. Welcome to the forum! I noticed a duplicate thread, so I deleted the other one.
I'm also interested if anyone has found a good solution for this. My seat backs (and theater screen backs) are already getting all scuffed up with 2-year-old sized dirty footprints. But I'm not really sure how we can protect them without blocking access to the rear screens.
Ordered 9/19/16 -- Built 10/7/16 -- Delivered 10/27/16:
2017 Pacifica Limited - Molten Silver/Mocha
8 Pax - Vac - SafetyTec - UConnect Theater & Sound
20" Wheels - Tow - KeySense - Splash Guards