Worked as advertised and made our trip so much easier.
Bought the Pro Series 60&#34; x 24&#34; cargo carrier and this waterproof bag for a trip from North Carolina to Illinois and back. Filled it to the stretching point with the luggage of six people so we could utilize all the seats in our SUV. The bag's footprint was a perfect fit for the cargo carrier. 1200 total miles over 10 days, no tears, no rips, no holes, no wet luggage.<br /><br />Chose this set-up instead of a top carrier to avoid loss of MPG. We saw no discernible change to our gas mileage while using this product. Also having the luggage at this level made accessing individual items much easier and we avoided the need to lift heavy luggage over our heads. There is no specific way to lock this bag, but since it is soft sided a thief could just as easily cut it open with a utility knife. Let vigilance be your security.<br /><br />Heavy duty zipper accepted the punishment of the bag being overfilled, but did not break or separate. The top flap design overlapped the zipper and sturdy velcro held it in place. We made certain that the zipper and flap faced to the rear so water from the tires would not splash up into it, which is the only way water might end up in the bag. Drove through a lot of rain and water on the road, everything stayed nice and dry.<br /><br />Tie down straps looked odd and a little small at first, but once we read the instruction and put them in place, they were sturdy and more than up the task.  I suppose if the cargo weighed a lot more than the carrier should hold and your driving was more erratic than the law allows you could force it to shift and bounce around to the point that straps might not hold it. Otherwise the tie down straps do the job. When adjusted they do leave a long strap 'tail' to blow in the wind. Learn to tie the tails down to avoid them slapping around.<br /><br />Bag is sturdy, but if you fold it back up the way it was originally shipped, it takes up very little storage space.
Rating: 5 stars