Admittedly, I knew zero about tonneau covers and passed on that option when I purchased my RAM. I did some Internet explorations only to find a plethora of products available it really teased the brain. Had to focus on just a few looking at the hard cover models. Finally settled on the Extang
Solid Fold. Fits snugly, looks great, easy to fold out of the way. It does seep a little water in the crevices during heavy rain (Oregun, you know) but not a lot to be bothersome to box or contents.
Indeed, they are a nice option to consider.