I'll try and post a photo up a bit later Bill, but I got it online for around $88 and am happy with it. It's not a must, but I like having that extra bit of protection.
I like the Infiniti wording and logo in the center and that it 'self velcros' to the 3rd row seat backs. It has stayed in place for the few weeks I've had it in.
It also came with two new hinges for the under floor compartment. I believe they are 'firmer' because when you open it now it has to support the extra weight and pushback from the mat. Indeed, it stays open once I changed them out as well. Well, let me say I didn't initially change them out and the original ones did not hold it open, but the new ones did.
I should mention, they come in two variations. They have ones that are for people who have the motorized 3rd row seats and another version for those who do not (like me, who have the hybrid version. The hybrid has manual lift ones hence the strap in the photo since the battery is under the seat instead of a motor), so please be sure wherever you get them they ask which ones you want.
The Infiniti one is sort of a tough felt material with a rubber backing. It seems like it will be pretty waterproof. But I'd probably opt for the one from Weathertech, which is rubber/vinyl and one piece. It will hold more water/snow/dirt than the Infiniti one, and be easier to clean up. The benefit to the Infiniti one is it splits and attaches to the individual rear seats, plus it folds up nicely when the seats are up.