Jeep dealer has them specifically made for the the wranglers. I can't remember the cost, but I'm pretty sure it wasn't 80$
I've had this one for a couple years. Zero problems and rolls up small enough to stick under a seat. https://smile.amazon.com/gp/product/B000R3WQPM/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Prior to that, I did the chop-up-a-cheap-one bit. That cheap one started shedding small pieces of whatever was inside it after a few months. Maybe it was just the one I had, but my 2¢.
I got a cheap one from Wally World, the type that looks like silver foil bubble wrap and cut the bottom off to fit. Four years later it's still doing its job.