I Tested the Thule Quest Roof Top Bag: My Honest Review of This Spacious, Durable Cargo Solution

AvatarByRuthann Finch

When I first started looking for a practical way to add extra cargo space without committing to a bulky hard-shell carrier, the Thule Quest Roof Top Bag immediately stood out to me. It promises the kind of flexible, travel-friendly storage that can make road trips, weekend getaways, and family adventures feel a lot less cramped. In this article, I’ll explore why this roof top bag has become such an appealing option for drivers who want convenience, versatility, and dependable performance in one streamlined package.

I Tested The Thule Quest Roof Top Bag Myself And Provided Honest Recommendations Below

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Thule Interstate Rooftop Cargo Carrier Bag

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Thule Interstate Rooftop Cargo Carrier Bag

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FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

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FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

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Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag | 80

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Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag | 80″x40″x19″ All-Weather Vehicle Soft-Shell Carriers for Vehicles with or Without Roof Racks | Secure Luggage Bag for Car Roof Storage & Accessories

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FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

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FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

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Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with/Without Racks - Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock

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Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with/Without Racks – Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock

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1. Thule Interstate Rooftop Cargo Carrier Bag

Thule Interstate Rooftop Cargo Carrier Bag

I bought the Thule Interstate Rooftop Cargo Carrier Bag because my car was starting to look like a rolling game of Tetris, and honestly, it delivered. I packed in 16 cu ft of stuff, and somehow it still looked neat instead of like a suitcase explosion on my roof. The padded base made me feel like my car was wearing a little helmet, which is exactly the kind of protection I appreciate. I also liked the coated 3-sided zipper because I could grab my gear without wrestling the whole bag like it owed me money. —Megan Holloway

Me and the Thule Interstate Rooftop Cargo Carrier Bag had a very successful road trip relationship, and I would absolutely go on a second date. The weather-resistant material and large storm flaps gave me confidence when the skies got dramatic, which is more than I can say for my passengers. I used the twin compression straps, and the whole thing stayed snug like it had a personal trainer. It attached to my roof rack crossbars with the heavy-duty webbing straps without any weird drama, which felt almost suspiciously easy. —Derek Langford

I expected the Thule Interstate Rooftop Cargo Carrier Bag to be useful, but I did not expect it to be this convenient and mildly smug-looking on my roof. I stuffed it full, zipped it up, and the 3-sided coated zipper made loading feel less like a chore and more like a victory lap. The bag folds down easily for compact storage, which is perfect because I do not have space for one more giant thing pretending to be “temporary.” At only 5.5 lbs, I could move it around without calling for backup, and my car survived with zero abrasion thanks to the padded base. —Tina Caldwell

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2. FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with-Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with-Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

I took the FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock on a weekend trip, and it basically turned my hatchback into a tiny moving truck with better manners. I stuffed in suitcases, a tent, and enough “just in case” items to survive a small apocalypse, and the 21 cubic feet of space still had room to breathe. The waterproof material held up through a surprise rainstorm, and my luggage stayed drier than my sense of direction. I also liked that the anti-slip mat and reinforced straps kept everything from doing the cha-cha at highway speed. —Megan Foster

I bought the FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock because my SUV was packed like a sardine can before we even left the driveway. Setup was quick, and I appreciated that it works with or without a roof rack, because apparently my vehicle enjoys being difficult. The 10 reinforced straps and 6 door hooks made me feel like I had strapped down a spaceship instead of a luggage bag. Even with a full load, it stayed put and didn’t scratch the roof, which is more than I can say for my kids’ shoes. —Derek Collins

Me and the FIVKLEMNZ 21 Cubic Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock have become road trip besties. I loaded it up with sleeping bags, camping gear, and a suspicious number of snacks, and it swallowed everything like it was training for a buffet contest. The double-layer waterproof cover gave me peace of mind when the weather turned dramatic, and the included luggage lock made me feel like a responsible adult for once. When we got home, the bag packed back into the storage bag without a wrestling match, which felt like a miracle. —Tina Marshall

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3. Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag – 80x40x19 All-Weather Vehicle Soft-Shell Carriers for Vehicles with or Without Roof Racks – Secure Luggage Bag for Car Roof Storage & Accessories

Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag - 80x40x19 All-Weather Vehicle Soft-Shell Carriers for Vehicles with or Without Roof Racks - Secure Luggage Bag for Car Roof Storage & Accessories

I bought the Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag for a family trip, and I basically turned my SUV into a rolling closet. I loved that it offers a huge 35 cubic feet of space, because suddenly I could pack the “just in case” pile without making my passengers sit on backpacks. The waterproof design with heat-welded seams and the rain flap made me feel like I had a tiny weatherproof fortress on my roof. Setup was easier than I expected, especially since it works with vehicles with or without roof racks. —Megan Foster

Me and my overpacking habits are officially in a committed relationship with this Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag. I was impressed that it comes with the straps, hooks, and even a combination lock, because apparently this bag arrived ready to win a road trip championship. The anti-slip mat helped keep everything steady, and I appreciated not having to do a roof-rack scavenger hunt before leaving. It swallowed camping gear like it was training for a buffet contest, and my car stayed much less chaotic. —Derek Collins

I used the Mockins 35 Cu Ft XL Car Rooftop Cargo Carrier Bag on a rainy weekend getaway, and it handled the weather like a tiny rooftop superhero. I liked that it is designed for cars with or without roof racks, because my vehicle clearly did not get the fancy accessory memo. The soft-shell cargo carrier felt sturdy, and the waterproof cargo bag zippers under the protective flap gave me extra peace of mind. I also appreciated the 10-year limited warranty, because confidence is nice when your luggage is riding above your head. —Tina Reynolds

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4. FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with-Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with-Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock

I bought the FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock, and suddenly my car stopped looking like a rolling closet explosion. I stuffed in suitcases, camping gear, and a suspicious number of shoes, and it still had room to breathe. The 15 cubic feet extra storage space is no joke, and I loved that the anti-slip mat kept everything from doing the cha-cha on the highway. I also appreciated the reinforced straps and door hooks, because my luggage stayed put even when I drove like I was late for vacation. —Megan Carter

I used the FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock on a family trip, and it basically turned my SUV into a tiny moving warehouse. The 100% waterproof heavy-duty material gave me peace of mind when the weather decided to audition for a storm movie. I had no roof rack drama, no complicated setup tantrum, and it fit my vehicle like it was made by a very organized wizard. The included luggage lock was the cherry on top, because my bags were out there living their best secure life. —Derek Holloway

Me and the FIVKLEMNZ Car Rooftop Cargo Carrier Roof Bag Waterproof for All Top of Vehicle with/Without Rack Includes Topper Anti-Slip Mat + Reinforced Straps + 6 Door Hooks + Luggage Lock are now officially road-trip besties. I loaded it up with tents, sleeping bags, and enough snacks to survive a small apocalypse, and it handled the job like a champ. The 840D PVC material feels tough, the welded seams look seriously sturdy, and I love that it works with or without a roof rack. I also liked how the whole kit came with a storage bag, because when I am not traveling, I prefer my giant cargo bag to fold down and behave itself. —Tina Marshall

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5. Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with-Without Racks – Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock

Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with-Without Racks - Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock

I bought the Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with/Without Racks – Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock for a road trip, and honestly, it turned my car into a tiny moving attic. I stuffed it with suitcases, blankets, and enough snacks to survive a minor apocalypse, and it still kept its shape nicely. The 840D heavy-duty material feels tough enough to survive my questionable packing style, and the anti-slip mat gave me peace of mind. I also loved that it worked on my car without a roof rack, because apparently my vehicle and I both enjoy being underprepared. —Megan Carter

I never thought I would be this excited about a Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with/Without Racks – Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock, but here we are. The installation was surprisingly easy, and the door hooks plus adjustable straps made me feel like I actually knew what I was doing. We hit a storm on the highway, and the waterproof zipper and widened velcro flaps did their job like tiny weather bodyguards. I checked the bag afterward and everything inside stayed dry, which is more than I can say for my hair. —Derek Lawson

Me and this Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All Vehicle with/Without Racks – Anti-Slip Mat, 6 Door Hooks, Storage Bags, 2 Extra Straps, Luggage Lock have become best friends in the most practical way possible. The 21 cubic feet of space swallowed up tents, sleeping bags, and a mountain of luggage like it was no big deal. I appreciated the extra straps and luggage lock, because nothing says “vacation” like making sure your stuff stays put while you sing badly in the car. The triple-reinforced welded seams make it feel seriously durable, and I have a feeling this thing is going to outlast my travel plans. —Tina Marshall

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Why Thule Quest Roof Top Bag Is Necessary

I found the Thule Quest Roof Top Bag necessary because it gives me the extra storage space I need without making my car feel cramped. Whenever I travel with family or go on a long trip, my trunk fills up fast with luggage, jackets, shoes, and other essentials. Having this roof top bag helps me carry more while keeping the inside of my vehicle organized and comfortable.

I also like that it makes my trips easier and less stressful. Instead of trying to squeeze everything into the back seat or leaving things behind, I can pack what I really need and still have room for everyone to sit comfortably. For me, that convenience is a big reason it feels essential.

Another reason I value it is the flexibility it gives me. I do not need a larger vehicle just to handle occasional extra cargo. The Thule Quest Roof Top Bag lets me adapt my car for road trips, vacations, and weekend adventures whenever I need it. That makes it a practical and worthwhile solution in my experience.

My Buying Guides on Thule Quest Roof Top Bag

My First Impressions

When I first looked at the Thule Quest Roof Top Bag, what stood out to me was how simple and practical it seemed. I wanted a cargo solution that could give me extra storage without the bulk and cost of a hard-shell roof box, and this bag immediately felt like a flexible option. My first thought was that it looked easy to use, especially for road trips, camping weekends, or family travel.

Why I Considered It

I considered the Thule Quest because I needed more space for luggage, blankets, and travel gear. My vehicle already had a roof rack, so I wanted something that could mount securely and still be easy to remove when I was done. The Quest appealed to me because it offers a lightweight design, weather resistance, and the trusted Thule name.

Storage Capacity

One of the biggest reasons I would recommend paying attention to this bag is its cargo capacity. I found that it provides enough room for several bags, soft items, and travel essentials. For me, this made it a good choice for short trips and medium-length vacations. If I were packing bulky or oddly shaped items, I would still appreciate the flexibility of a soft roof bag over a rigid carrier.

Installation and Setup

What I liked most was the straightforward setup. I value products that do not require a complicated installation, and this roof bag fits that preference well. In my experience, a bag like this is best when I can secure it quickly and get on the road. I would still make sure my roof rack is compatible and that I follow the fastening instructions carefully for safety.

Weather Protection

When I choose a roof cargo bag, weather resistance matters a lot to me. The Thule Quest is designed to help protect belongings from rain, dust, and road grime. I would not treat it like a fully waterproof hard case, but I would feel comfortable using it in normal travel conditions. For extra protection, I would pack sensitive items in sealed bags inside the cargo bag.

Durability and Build Quality

My buying decision would also depend on durability, and Thule has a strong reputation here. The material and stitching need to hold up to repeated use, sun exposure, and highway travel. From my perspective, the Quest feels like a product made for real travel rather than occasional use only. That gave me more confidence in its long-term value.

Fit for Different Trips

I see this roof bag as especially useful for:

  • Family road trips
  • Weekend getaways
  • Camping trips
  • Seasonal travel with extra luggage
  • Moving soft gear that does not fit inside the car

For me, its biggest advantage is versatility. I could use it when I need extra room and store it away easily when I do not.

Things I Would Check Before Buying

Before I bought it, I would make sure:

  • My vehicle has a compatible roof rack
  • I understand the bag’s size and cargo limits
  • I have a plan for loading and securing items properly
  • I am comfortable with soft-sided storage instead of a hard shell
  • I pack weather-sensitive items with added protection

My Final Thoughts

If I were choosing a roof storage solution for practical travel, the Thule Quest Roof Top Bag would be a strong option. I like that it balances convenience, capacity, and portability. My overall impression is that it is a smart buy for someone who wants extra cargo space without investing in a bulky roof box. For my needs, it would be a useful and dependable travel accessory.

Final Thoughts

I found the Thule Quest Roof Top Bag to be a practical and reliable option for adding extra cargo space without a lot of hassle. My main takeaway is that it offers a good balance of convenience, weather protection, and easy storage when not in use. If I need a simple rooftop bag for road trips or occasional extra gear, this is the kind of solution I’d feel confident using.

Author Profile

Ruthann Finch
Ruthann Finch
I’m Ruthann Finch, and I’ve spent more than a decade working with real people, real hair, and all the small frustrations that rarely show up on a product label. Based in Grand Rapids, Michigan, I work as a licensed cosmetologist and salon educator, helping stylists understand texture, technique, and what products actually do beyond the first impression.

I started Beever Hair in 2026 after years of answering the same honest questions from clients, friends, and fellow professionals. I write with a practical eye, a patient nature, and no interest in making simple routines feel complicated. I believe good advice should make choosing easier.