What is the material used in the Fold-a-cover? The reason I ask is security from "slashers." When I lived in urban CT, that was a significant problem with all soft type covers. For that reason, I had a lid on my Sonoma, but I have to say it was pretty inconvenient in that particular bed size. Seemed like the things I hauled were just a little too big to close the lid all the way /forums/images/graemlins/frown.gif, and I was forever jury rigging tie downs to hold the partially closed lid down against the cargo. In my current truck, a Tacoma, I have a cap, and that has worked out pretty well, again for that bed size. We're planning to up-size to a 3/4 ton, and I'd like to not have a cap on that, so the folding unit has appeal to us.