4 out of 5 stars.

Pack-Right Saddlebag
Why not 5 stars: can not hold too much weight because too much stress on the webbing straps might unlock and come apart. The locking buckles are plastic clip types and not too strong. Not a good thing when traveling over 50 mph on freeway. My solution was to reinforce with tough dog leashes. The product definitely needs a frame or some kind of support as suggested in Tips and Tricks on the website.
I got this in addition to this: Link to Post for extra space.
I did not have a hitch so ended up securing the bag to the spare tire underneath the Honda Pilot. Please note: you can not open the back door once this is secured to the vehicle (unless you come up with a creative way to do this).
If anyone request I wil post the “how to” make the PVC frame for this. At least the dimensions will be useful.
No water got in to the saddlebag where we encountered thunderstorms and heavy downpours.
Recommend this if you need to carry light weight stuff (you always do on trips). For heavy luggage go with the Sports line from the same site.