We buy all the products we test — no freebies from companies. If you purchase through our links, we may earn a commission, which helps support our testing.
A rooftop cargo box is the ultimate antidote to road trip clutter. It acts as a weatherproof exterior gear locker, keeping muddy, bulky equipment off your upholstery. Moving the mess to the roof reclaims your cabin, freeing up critical legroom so passengers can stretch out and enjoy the drive.
The best rooftop box we have ever tested is the Thule Motion 3 XL. No other box was as easy to use or install. It excelled in our durability, security, and aerodynamics tests.
If you need less space, the INNO Wedge 660 is the best compact option. It uses a low-profile aerodynamic design and hassle-free installation. And it comes at a reasonable price.
For those who need maximum space without the premium price tag, the Yakima SkyBox NX XL offers unbeatable full-size value, while the Yakima RocketBox Pro 14 is an excellent budget-friendly choice for smaller hatchbacks. All four award winners are straightforward to install and remove and simple to open and close.
Over the past decade, we've tested and purchased more than 20 different cargo boxes. Our gear junkies have driven thousands of miles with these boxes on various vehicles, filled to the brim with all manner of gear, on all kinds of roads, passing through deserts, mountains, and many other landscapes in between.
Editor's Note: We updated our cargo box review on October 12, 2026, with a restructured award lineup and refined testing metrics to better guide both first-time buyers and experienced gear haulers.
Quick Picks
Here's a quick list of our favorite Cargo Box recommendations.
The Thule Motion 3 XL is a spacious, easy-to-use roof box from the updated Thule Motion premium lineup. With a cavernous 18 cubic feet of capacity, it's built for families and adventurers who need to haul a lot without sacrificing in-car comfort. The dual-sided opening design can handle everything from skis and snowboards to camping gear and bulky luggage. (We even stashed a folded-up stroller in it!) The intuitive mounting system clicks securely into place in minutes, with no extra tools required. Despite its size, the Motion 3 XL's sleek, aerodynamic profile minimizes drag and wind noise at highway speeds, making long drives noticeably more pleasant.
What really sets the Thule Motion 3 XL apart is how polished and refined it feels in day-to-day use. The PowerClick quick-mount system gives you confidence that it's securely mounted, while the reinforced lid and SlideLock system enable one-handed opening. On the downside, it is one of the heavier and more expensive options on the market, which may not suit every user or budget. The Inno Wedge 660 offers a comparatively easy mount and a premium finish at a more affordable price, but it lacks the capacity of the Motion 3 XL. For those who prioritize durability, user-friendly features, and maximum space, the Thule Motion 3 XL is a premium option that delivers on all fronts.
The INNO Wedge 660 is our favorite compact rooftop box. It has a dual-opening, low-profile design and is both stylish and highly functional. We love how easy it is to set up - it arrives nearly fully assembled, so installation is swift and painless. It mounts to your vehicle's crossbars with intuitive clamps that only need adjustment during first use, then lock into place with a lever closure. Taking it off is just as simple: lift the lever to release the clamp. This is a perfect choice for folks who don't want to keep a box on their roof year-round. Once installed, its sleek, aerodynamic profile looks sharp and helps reduce wind noise, while still offering enough internal space to carry skis, snowboards, or other long gear.
The Wedge's slender design isn't ideal for transporting bulky luggage or larger camping supplies. Also, it has a shiny exterior, which we found scratches and scuffs more easily than matte-finish models. But overall, the Wedge is our top recommendation for most people. We love the balance it strikes between form and function at a fair price.
Spacious 18 cu ft capacity with a flat, snag-free floor
Dual-side opening and tool-free mounting
Textured finish hides scuffs and scratches
CONS
Bulky profile and requires two hands to latch securely
SPECIFICATIONS
Volume
18 cu ft
Dimensions
84" x 36" x 16.5"
Maximum Ski Length
195 cm
Hatch Clearance
Excellent
Measured Weight
51.0 lbs
The Yakima SkyBox NX XL is a cavernous, dual-opening roof box that hits the sweet spot for families needing massive storage without a massive price tag. We love how simple it is to set up—it mounts to your vehicle's crossbars with low-profile clamps and a removable torque wrench that prevents over-tightening. Because the mounting hardware sits nearly flush with the floor, you get a completely flat interior, making it incredibly easy to slide in hard-sided coolers, rolling luggage, and camping gear without snagging. It opens from both sides and can accommodate skis up to 195 centimeters. For long-term durability, the rugged nano-texture finish hides scratches, scrapes, and road grime better than glossy premium models.
While the SkyBox NX XL matches the 18 cubic-foot capacity of top-tier models like the Thule Motion 3 XL, it feels less refined in daily use. Because the lid is large and slightly flexible, you will often need to use both hands to align the shell before the latch engages. The oversized profile also means it isn't as sleek or aerodynamic as the low-profile INNO Wedge 660, and hoisting its 51-pound bulk onto a tall SUV is definitely a two-person job. However, if you need maximum volume for road trips and winter sports but want to save $300 compared to the premium competition, this is absolutely our top full-size recommendation.
Even with its generous 18-cubic-foot capacity, the Yakima SkyBox NX XL leaves just enough crossbar real estate on wider bars to squeeze in a paddleboard or bike mount alongside it. Credit: Sara James
With its generous 18-cubic-foot capacity and wide opening, the Yakima SkyBox NX XL easily swallows bulky, awkwardly shaped items like folded strollers and wagons that would otherwise overwhelm your trunk. Credit: Sara James
The sculpted, tapered tail of the Yakima SkyBox NX XL helps reduce highway drag and wind turbulence while maintaining ample clearance for rear roof antennas. Credit: Sara James
The Yakima SkyBox NX XL features a rigid internal pull handle integrated directly into the lid strut, making it easy to reach and close the box even when mounted on a tall SUV. Credit: Sara James
At 84 inches long, the Yakima SkyBox NX XL commands serious roof real estate, offering massive 18-cubic-foot capacity while maintaining a sleek, proportional profile that doesn't overwhelm mid-size SUVs. Credit: Sara James
Heavy-duty, articulating lid supports on the Yakima SkyBox NX XL easily support the large shell's weight, keeping it securely propped open while you pack your gear. Credit: Sara James
The Yakima SkyBox NX XL comes standard with Yakima's SKS (Same Key System) lock cores, so you can use a single key to secure your cargo box and other Yakima roof accessories. Credit: Sara James
Tool-free mounts install easily on factory or aerodynamic crossbars
Textured matte finish and solid latches provide dependable security
Dual-sided access makes gear loading simple from either curb
CONS
Boxy profile looks less sleek than higher-end aerodynamic models
170 cm interior length won't fit long adult skis
SPECIFICATIONS
Volume
14 cu ft
Dimensions
74" x 33" x 16"
Maximum Ski Length
170 cm
Hatch Clearance
Good
Measured Weight
40.0 lbs
The Yakima RocketBox Pro 14 is a great bargain, perfect for anyone who wants an all-around excellent cargo carrier without paying the premium for a top-tier model. Easy to install on most vehicles, this roof box is favored for its convenience and user-friendliness. It has dual-side openings - an absolute must, in our opinion - and feels very solid, secure, and well-made. The matte finish and dimpled texture also do an excellent job of hiding scrapes and scuffs.
However, a few concessions were made to keep the price lower — as is typically the case. The overall size of this cargo carrier is slightly smaller than that of the premium models, which means the maximum length of gear you can carry is around 170 cm. This will limit many adult skiers. It also looks a bit stubbier and less sleek overall than some of its pricier counterparts. That said, we highly recommend this product to anyone who needs extra gear storage and doesn't want to sacrifice too much on quality or budget.
The Yakima's RocketBox Pro is a great roof box option for those on a budget Credit: Sara James
Product Comparison Table
Some of the boxes we tested lined up side by side. Credit: Jenna Ammerman
How We Test
We've been testing cargo boxes since 2017, and we're always looking for new and notable models to add to our review. To ensure objectivity, we purchase all the products we test and never accept any free products or incentives from manufacturers. We began by unpacking and assembling each model, paying close attention to how easy each was to install and load with gear. We left each box on for several weeks and drove it hundreds of miles. We evaluated how user-friendly each was for day-to-day use and noted any significant changes in vehicle handling and fuel efficiency. We loaded and unloaded the boxes with a wide variety of equipment, from sleeping bags to climbing ropes to kayak paddles and skis. Throughout testing, we tracked any visible wear and looked for durability flaws. See our How We Tested for additional details on our process.
Why Trust GearLab
Our cargo box testing team is headed up by Lauren DeLaunay, David Wise, and Sara James. Lauren has lived out of her van for several years and taken these boxes all over the country, filling them with gear for many kinds of trips. David lives in Tahoe and spends much of the year transporting skis, snowboards, and camping equipment. In addition to conducting comprehensive real-world testing, David draws on his engineering background to rank and score each model's aerodynamics using his design.
Sara is not a stranger to loading her vehicle with gear for multiple people and multiple sports as she covers miles across California. Sensible storage solutions are essential as she transitions from a traveling dirtbag to a professional presenter, teaching educators at school districts across the state. Sara brings years of experience as an athlete, gear tester, and educator, and loves sharing what she learns with others.
Assessing these models meant lots of measurements and road trips in all sorts of conditions. Our testers were more than happy to load them up with gear and hit the road.
Analysis and Test Results
To rank and score these products and identify which cargo-carrying box is truly worthy of being crowned the best, we developed a comprehensive testing plan that evaluates each product across various aspects, including ease of installation and how well its finish hides scrapes and scratches. Our assessments can help you find the right cargo box for your needs.
Worse Value
Better Value
What's the Best Value?
The Yakima SkyBox NX XL and Yakima RocketBox Pro 14 represent the category's sweet spot for balancing durability, security, and price. While cheaper sub-$500 boxes exist, they typically cut corners on latch mechanisms and highway rigidity. These two Yakima options deliver proven, rattle-free reliability without breaking into four-figure pricing.
The NX XL packs a stroller, carry-on luggage, and much more. Credit: Sara James
For full-size storage, the Yakima SkyBox NX XL is our top value recommendation. It delivers the same cavernous 18-cubic-foot capacity, dual-sided opening, and crossbar security as top-tier models like the Thule Motion 3 XL, but saves you roughly $300. With a flat, snag-free floor and clearance for skis up to 195 centimeters, it gives families and heavy gear haulers premium functionality without the luxury tax.
If you drive a hatchback, compact crossover, or have tight garage clearances, the Yakima RocketBox Pro 14 offers great compact value. It provides dual-sided access and straightforward, tool-free mounting for $699 (often discounted to $599). However, winter athletes should measure before buying: with an interior limit of 170 centimeters, modern powder skis and longer boards will not fit. If hauling full-length adult skis or rigid camp furniture is non-negotiable, stepping up to the SkyBox NX XL is the smarter long-term buy.
The INNO Wedge offers great performance at a price point below premium boxes. Credit: Sara James
Capacity
Total volume dictates how much gear you can pack, but internal length determines exactly what you can carry. A high-capacity box won't help if your alpine skis are too long to close the lid. Use the charts below to match both metrics to your longest equipment.
Installation & Usability
Whether you mount a box for occasional trips or leave it on year-round, usability varies dramatically. We tested the full lifecycle—assembly, roof mounting, latch operation, packing, and removal for storage. Because daily convenience dictates long-term satisfaction, ease of use carries the heaviest weight in our overall scoring.
The Thule Motion 3 XL and INNO Wedge both rose to the top in our ease-of-use tests. We love that these cargo carriers arrive nearly fully assembled, requiring only that you place the clamps into position and tighten them up — no inserting locking cores or attaching lids.
The torque system on the Thule Motion 3 XL makes this box easy to mount securely and confidently. Credit: Sara James
The mounting system on the Thule Motion 3 XL makes installation easy and typically takes under five minutes. The clamps mount through easy-to-adjust portals you can move to suit your bars. Next, screw down the integrated torque indicator until it clicks when fully adjusted.
The Motion 3 lid opens from either side and features a pull strap, making it easier to close without stretching or standing on anything. This lid also has a reinforcement bracket, which makes one-handed opening and closing easier.
Pinch the tab to open the Thule Motion 3.
Thule's SlideLock system provides a visual indication of whether the box is closed securely, a feature we liked a lot but found in only a few of the premium models we tested.
The only missing add-on, in our opinion, is an interior light, though Thule offers one as an advanced accessory, along with an optional box liner. However, the box liner is optional. The Thule Motion 3 XL is one of the largest and heaviest models in our lineup, and it takes two sets of hands to get the box onto a car roof.
Grab a buddy for easier loading. Credit: Sara James
The INNO Wedge leads the way with the quickest cargo system to remount it, perfect for those who want to throw the box on with minimal fiddling. The clamps are easy to secure, with a large dial to adjust and a minimal clamp. Once you've adjusted the clamps to your bars, you can open the lever to detach the clamp or close it to mount it back on your car. The dual-sided access also saves you time digging around for what you need.
The INNO Wedge is one of the easiest models to remount, saving you time once it is remounted to fit crossbars. Credit: Sara James
The Yakima SkyBox NX XL has a similarly quick, user-friendly attachment system, with an audible click to confirm it's securely mounted. The removable torque indicator helps keep the bottom of the cargo box snag-free and maximizes storage space. There is a handy spot to stash this torque key; however, we still think it could be easy to misplace.
Opening the Yakima's attachment feet using the provided tool. Credit: Sara James
This Yakima Skybox NX XL also has a visual indicator on the handle that shows when the lid is fully secured. We found this system less foolproof than the Thule version in the Motion 3 XL and other premium Thule models. The SkyBox stands out for its ease of loading, thanks to a flat, flush-mounted interior floor that eliminates the ridges and gaps common in many cargo boxes. This design makes it simple to slide in larger items without snagging straps, pack corners, or ski edges. The wide opening and roomy interior further improve accessibility, helping you organize gear more efficiently and maximize usable space. Whether you're loading bulky luggage, camping gear, or sports equipment, the smooth floor makes the process quicker and less frustrating.
For storage when not in use, the FLATED Air-Carrier stood head and shoulders above the rest, thanks to its ability to deflate, roll up, and fit into a backpack-carrying system similar to that used for a stand up paddleboard. Those who need a temporary storage solution will find this an easy choice.
The FLATED is exceptionally easy to store, deflating into a compact size you can stash in your garage. Credit: Sara James
The INNO Wedge's low profile also makes this model less cumbersome than most, a perk if you expect to store it in your garage for part of the year.
The INNO is compact enough to store easily. Credit: Sara James
The GoPlus Carrier features quick clamps and opens on both sides. The quick clamps don't permanently mount to the box, but they are very user-friendly, making installation swift and easy. However, the clamps lack an indicator to show when they're tightened enough. Still, we like that the lid is secure and easy to open and close. Its lightweight and short length make it easier for one person to install on a car, but crossbars with larger spans may not be compatible.
The GoPlus Carrier has a more palatable price tag, but is slightly more involved to install. Credit: David Wise
The Yakima RocketBox is also above average in ease of use. This cargo carrier has a solid handle and dual-opening doors, making it very easy to load or unload gear. The installation clamps can be a bit finicky, especially with larger crossbars. We like the tool-free installation, but it can be harder to tell whether they're tightened enough.
The RocketBox does surprisingly well, and at a fair price. Credit: David Wise
With all of that, we came up with overall scores for installation and usability.
Locks & Security
Everyone wants to be confident that a roof box will keep their gear as safe as possible, though a determined thief could probably get into any of these products with enough motivation and the right tools. Additionally, nobody wants to be driving down the highway and see their gear flying behind them in the rearview mirror. We awarded the most points to carriers with simple, easy-to-operate security systems that look durable enough to withstand break-ins and trustworthy enough to protect our gear.
Nearly all products in our lineup offer comparable security. Most modern cargo boxes won't let you remove the key unless the box is properly latched and secured, which we consider crucial. Some boxes, like the Thule Motion 3 XL and Yakima SkyBox NX XL, have red indicators that show whether the box is properly latched before you try to remove the key, giving you extra confidence your belongings are safe. Both models support a one-key system, so you can order replacement lock cylinders and keys to secure your bars and boxes with a single key.
We found the Thule locking system confidence inspiring. Credit: Sara James
Most other boxes, like the INNO Wedge and RocketBox Pro 14, have factory-installed locks but lack extra indicators or ergonomic handles. Still, they are easy to latch and unlatch and won't let you remove the key while the box is unlocked, so you won't forget to close it or lock your keys in the box.
While these boxes all have locking mechanisms, we are sure that each model could be broken into without too much effort if someone really wanted to and had the proper tools. Also, if your crossbars aren't securely attached to your car, some roof-mount systems can be easily detached. Regardless, you might want to think twice about leaving particularly pricey gear in your unsupervised cargo box for extended periods.
The FLATED Air-Carrier comes with a zipper lock, deterring quick hands from your cargo box contents. However, with enough time and no one watching, little can stop someone from taking this system off your rooftop. This isn't a box you'll want to leave unattended on your car.
Like most models, the RocketBox won't let you remove the key unless it's locked. Credit: Sara James
Construction & Durability
Almost all of these products are made from similar materials, so we looked at the details for clues about their longevity. We drove each box around for weeks without any signs of wear and tear, so this category focuses on structural integrity and weather resistance. For the most part, every box in this review passed the snow, rain, and wind test, but some had more questionable design features than others. We know you want to invest in a long-lasting roof box that you can rely on for countless future adventures, so we assessed this metric with a critical eye.
One of the main indicators of cargo box quality is the frame's overall rigidity, especially the lid. We looked for fairly rigid lids that aligned the latching mechanisms without issue. We also examined the construction and design of the clamps and locking systems, as well as the potential for water intrusion. Finally, we assessed any wear and tear or other damage each cargo carrier might have sustained during our rough-and-tumble testing.
With a sturdy feel and well designed components, the INNO Wedge boasts a high quality-to-price ratio Credit: Sara James
We found the Thule Motion 3 XL took the lead in this metric, with the Yakima RocketBox Pro 14, INNO Wedge 660, Thule Pulse, and Yakima Skybox NX XL all trailing close behind. These cargo carriers held up well in our testing and feel solid and sturdy, with lids that open with minimal flopping. They are among the most resistant to water intrusion, and the different clamps and latches all feel well-designed. The Thule took the podium thanks to the reinforcement bracket inside the lid, which boosts structural integrity and makes it easier to open and close with one hand, since the lid flops less.
If you have bulkier items to carry the Thule Motion 3 XL is a great choice. Credit: Sara James
Overall, we found that most of these products offer adequate protection for your gear. Our belongings were usually dry even after multi-day snowstorms, driving through heavy rainstorms, or getting sprayed with a garden hose on full strength for 20 minutes, one of our rigorous simulated weather tests.
Testing in the snow as well as the rain gives a clearer picture of weather resistance. Credit: Sara James
We are a bit more concerned about water resistance regarding the SportRack Vista XL. These cargo carriers mount to roof racks with a set of U-bolts and feature pre-drilled holes to accommodate different crossbar spacings. These holes mean water can enter at multiple points. To remedy this, SportRack includes vinyl stickers to cover the unused holes. These stickers performed fine during testing, but we wonder if their effectiveness at keeping water out might degrade over time.
Regarding water resistance, the clamps on the Goplus Carrier are mediocre. The clamps push through a slit in a piece of rubber sheeting, which probably provides a better seal than the vinyl stickers, but it's not as good as the premium models with quick-clamp, sliding-seal designs.
While a bit unique in style, the Goplus Rooftop Carrier offers slightly mediocre water resistance in its clamp design. Credit: David Wise
None of these boxes showed any significant damage from normal wear and tear, though most had a handful of scrapes and scuffs from repeated installation and uninstallation. One tester bent two of the four mounting clips by accidentally backing a Thule box into a cement wall, but the cargo carrier wasn't badly damaged.
Glossier models like the Thule Motion 3 XL and INNO Wedge tended to show scuffs and scrapes more easily. Most people accept that their cargo box will show some scrapes over time, but if that bothers you, consider a matte or satin finish box.
Glossier finishes show scuffs a bit more than other options. Credit: David Wise
Aerodynamics & Styling
Although we tend to prioritize function over form in most categories, we recognize that cargo boxes can be an eyesore and something you'll see on your vehicle daily. Testing for this metric was fairly subjective and based on a group consensus.
No designs shocked us in this review; all the products we tested generally looked like what we'd expect from cargo boxes these days. They come in a surprising number of sizes and finishes, though, and we had clear preferences. With its low profile and sleek finish, the INNO Wedge 660 is definitely more appealing than your average cargo box. We also like the edgy look of the Thule Motion 3 XL. However, both show dirt and scrapes more readily because of their glossy finish.
The INNO Wedge's glossy shell. Credit: Sara James
If you're going for a more muted aesthetic, the Yakima SkyBox NX XL might be a better option. We generally prefer the matte finish for our adventures, as it hides dirt and dead bugs well — a problem we hadn't initially considered. Scratches and scuffs are also much more subtle on matte finishes, a problem glossy models struggled with after many miles on the road.
Matte finishes, like on the Yakima RocketBox Pro 14, will hide imperfections. Credit: Sara James
We also appreciate that some models, such as the Thule Motion 3 XL and INNO Wedge, come in multiple colors, so you can pick the best match for your car. This adds real versatility and personalization.
We weren't the biggest fans of the surface texture and finish on some of the cargo boxes. The textured finish on the SportRack Vista seemed a little cheap to us, to the point that it might detract from the appearance of nicer cars. We liked the dimpled finish on the Goplus Rooftop a bit more.
The Goplus Rooftop doesn't look too bad for a lower-budget model. Credit: Cindy Wise
The Yakima RocketBox 14 also has a dimpled matte texture that helps hide minor blemishes. However, this box looks less sleek and stylish than some of the other models. Still, it could be a good option if you like how the textured surface matches your vehicle and want to save some money.
A Note on Gas Mileage
Does adding a heavy box to your vehicle affect its power, handling, and fuel efficiency? Sure. Did we notice the difference, especially the differences between the boxes? No, not really. We tested boxes across different test cars and found no significant impact on handling, whether we were traveling on the freeway at high speeds, making passes, or driving over potholes and bumps on rough roads.
These are all large bow-tie hats that sit on top of your car, increasing wind resistance and drag while you drive. However, they are all quite comparable, especially for larger SUVs or trucks that are not particularly aerodynamic to begin with. Drag is hugely dependent on speed as well, so you most likely can negate any loss in fuel economy by driving just a bit slower — and you probably don't want to be speeding with a fully loaded cargo box on top of your car anyway.
Since gas-mileage was not really a variable between designs, we focused more on the ease of use, security, quality and appearance Credit: Sara James
Other Notable Cargo Boxes
Thule Motion 3 XL Low If you need the length to store long items, such as skis or paddles, but don't want the bulk, the Motion 3 XL comes in a low-profile version, sporting all the same high-quality features but saving you weight and height clearance.
KAIRAY 500 Depending on your needs and car setup, a hitch-mounted cargo carrier may be a better option for you, as these are typically cheaper and easier to access for loading and unloading. You can often carry much taller items and even lash large, bulky items down to the metal frame, which you typically can't do with a roof rack. Kairay 500 is the best I have tested so far and comes at a great price. That said, hitch racks have some downsides compared to roof cargo carriers. It takes a lot more time to open, close, and secure the items in the vinyl bag. Getting the hitch on and off usually takes two people, and the rack is awkward to store. If you want to take the bag on and off the metal frame, it takes a lot of time to tie and untie all the straps. And on many newer cars, the backup sensors can be quite annoying every time you put your car in reverse. That said, this is a great value option, especially for less frequent road trips.
Conclusion
Our goal is simple: to help you find the cargo box that's not just good enough, but perfect for your adventures. Sure, every model here will haul your gear from Point A to Point B, but the real difference lies in the details: the subtle design choices, clever features, and trade-offs that separate the good from the great. With our in-depth, hands-on testing and honest recommendations, you'll be equipped to choose the box that fits your gear, your vehicle, and your budget. Here's to organized loads, spacious rides, and safe travels wherever the road takes you.
