Thule 846 Quest Rooftop Cargo Bag

We strapped it according to directions on the top of our car. It rained some and was windy one day, but not downpours. Even though we had everything inside in super strong zip locks--everything (EVERYTHING) got soaked.I know it said it was water resistent (I think that was the word they used) but come on--this was bad!
So I returned the item and Amazon makes it so easy to return.
Elaine

It's a very sturdy bag. Bag being the key word. If you're going to be using it often, spend the extra cash and get a hard enclosure. It's almost impossible to stuff it so that there are aerodynamics involved. This means you will usually end up killing your gas mileage with the semblance of a large air dam on the top of the vehicle. Under wet conditions, the bag performs as expected, however, in a hard rain prepare for wet luggage. I learned my lesson the first time when we got to the hotel and had to use the laundry room to wash 4 suitcases of clothing. Wrap everything in garbage bags if you can. Due to the fact it has a zipper, you can expect a soggy reception after you drive through a storm.

Product is great. Allowed my family to pack needed items for our vacation that would not fit in our SUV. Provided plenty of room, easy to attach to car. Overall great product.

We used this on a vacation trip and loved it. Didn't seem to affect the gas mileage on a 6 hours trip. It didn't rain so can't comment on that but we put most things in plastic bags just in case. The side-to-side straps didn't fit across when the bag was loaded so we had to move things out of the middle. Then we just used a bungee cord on the way home. I would definitely recommend for the storage, convenience and quality.

Purchased this cargo bag last minute before our trip. Traveled from Detroit Mi to Phoenix Ar (5000 miles, yes some of it was via scenic route and 90mph) we had no major issues with the product.

Luckily I read some other reviews prior. Correct they are not water-proof, only weather proof (water gets in). So take the time and put your stuff in a large garabage bag (55 gal works well). One other item; make sure you stuff it full; use blankets, pillows or anything soft to ensure it is full to prevent flapping.

I highly recommend this product.