Oh hey, I am unofficially a R&D person for them!
I got one from everythingsuv.com but it was for the double decker system. The carpeted area has 2 dogears behind the wheelwells. The double decker has plastic panels there so the cut is different. Be sure to specify which type you have!
Canvasbak didn't realize this until I called and returned mine. The Canvasbak people are really nice. I never bothered to get a rear cover and just have a moving blanket back there
The cover itself:
The fit is glove tight. No wrinkles, no chance of movement at all. In fact, when you put it in, it just looks like a factory installed look. The panels velcro into place and it is like some iron-clad velcro. It won't budge.
It is a canvas material- I believe it's treated to be water tight.
It comes in 3 panels (cargo area, 2 halves of the seatbacks).
The only drawback I saw is that since it is 3 panels, there are gaps where dirt can fall into. That may not be an issue if you don't carry around mucky loads like dirt or landscaping turf, etc.
I used to have pictures of it up but took them down a while ago. It's a really clean installation. It doesn't look like you have a cover back there-which is nice.
I never reordered because my Wet Okoles cover the seatbacks. I just need the cargo area. If Canvasbak did only the cargo area panel seperate, I would definitely buy it.