We scanned Amazon's bestseller list for the highest-rated rooftop carriers, then pulled the best, most authoritative reviews for each.
Keeper Waterproof Cargo Bag ($50)
"My girlfriend and I recently relocated from New York City to Los Angeles. We downsized as much as necessary and packed the rest of our lives into our Mazda 3 hatchback and began heading west. I was totally satisfied with this product. It stayed sturdy after 3,000 miles of driving and kept our stuff dry through many rainstorms."
Thule Force Cargo Box ($470)
"I bought the Thule Force for a trip from Texas to Florida. It easily fit two full-size suitcases, snorkeling gear, and some camp chairs. I traveled at an average of 75 miles per hour and experienced no issues. We also drove through some pretty significant storms on our return trip to Texas and I found not a drop of water on the inside when we got home."
Coocheer Waterproof Carrier ($270)
"The beauty of this product is that it frees up space in my minivan so that my family has more leg room. The packed capacity is really huge–nearly the size of three large luggage bags. It’s easy to securely attach to a roof rack, it’s completely waterproof, and it folds up fairly small when not in use."
Shield Jacket Travel Bag ($50)
"We just got back from a camping trip to the Grand Tetons and we used the Shield Jacket to haul some of our bulkier items. The product was very easy to affix to our car and the flaps and velcro were easy to figure out and adjust. During the trip, we ran into the ubiquitous bugs, but also a number of rain showers and one strong thunderstorm. All our contents in the Shield Jacket remained dry and in perfect condition. This purchase was well worth it!"
Yakima SkyBox Carbonite Cargo Box ($500)
"The SkyBox is easy to install and easily holds a stroller, backpack, and four large duffel bags. It’s convenient to be able to open from either side and I like the locking feature. Many people have randomly commented on the how good it looks."