I looked into this but didn't find any "cargo liner" that would work both for 3rd row up and 3rd row down.

Decided to go with the "All Weather Cargo Liner for vehicles without third row seats" as I will only very occasionally use the 3rd row.

If I was going to use the 3rd row more often, I would get the "All Weather Cargo Liner for vehicles with third row seats" as well or else buy a piece of ribbed black rubber roll and cut it to size (from Home Depot).