Cargo tarp recommendations

Has anyone found a cargo tarp that's a good fit for the CS? Looking for something to use when the seats are down and I'm hauling messy cargo. I'm hoping to find something that covers the full cargo area with the seats down, creeps up the sides of the cargo area and the rear of the front seats, and has a flap that would help protect the tailgate when loading/unloading. There's a million and one options on Amazon et al but they're all generic-fit and it's hard to know how well any one of them would work in the CS.

Anyone have recommendations?