It was just hanging out a little, maybe 5-6” under the seat, noticed it flapping around and just looked weird, I pulled on it some to see if it was loose.
Wasn’t like in that picture, that was after I pulled on it some. That was just to show what it was. Seemed weird, so asked what it was.
Makes sense if is to seal the foam from moisture. I took the seat cover off and wrapped the cushion with the bag and taped it so can’t come loose. All good now.
thanks