A roof cargo box can make a family road trip more comfortable by moving luggage, camping gear, and other bulky items out of the cabin. The right choice depends on how much you need to carry, whether the box fits your vehicle’s crossbars, and how easily you can load it. Below, we compare five hard-shell options, from compact storage to a larger 21-cubic-foot carrier, and highlight details to check before you buy.
Quick Comparison
| Roof Cargo Box | Listed Capacity | Notable Features | Best Fit |
|---|---|---|---|
| Dvasovio 14 Cu Ft Hard Shell Roof Cargo Box | 14 cu ft; 130 lb capacity | Dual-side opening, tool-free mounting brackets | Families wanting a classic brown finish and broad crossbar compatibility |
| QUAWIP 14 Cu Ft Rooftop Cargo Box | 14 cu ft; 130 lb capacity | Passenger-side opening, security keys | Travelers who can confirm their crossbar width and spacing |
| Thule Motion 3 XXL Rooftop Cargo Box | 21 cu ft | PowerClick mounting system, SlideLock | Families looking for the most listed storage space |
| Yakima DeepSpace Hard Shell Cargo Box | 10 cu ft; 100 lb capacity | Wide-angle opening, interior tie-down points | Those who prefer a smaller, rugged storage case |
| Curtainboro Dual-Side Rooftop Cargo Box | 17 cu ft in description; title says 19.4 cu ft | Dual-side opening, 165 lb capacity | Families wanting a higher stated load limit, after confirming capacity details |
Our Picks: Best Roof Cargo Boxes For Family Travel reviews
Dvasovio 14 Cu Ft Box: A Dual-Side Option With a Warm Finish
The Dvasovio offers 14 cubic feet of storage and a stated load capacity of 130 pounds. Its ABS+PC shell has a brown finish, giving it a different look from the usual black rooftop carrier. The box measures 62.52 inches long, 32.48 inches wide, and 13.19 inches high, so check those dimensions against your roof and the items you plan to pack.
Its dual-side opening is useful when a parking space or campsite makes one side of the vehicle hard to reach. The product description says the passenger side opens to 15 inches, while support arms hold the lid open. Pre-assembled brackets are intended to make installation tool-free and fit round, square, and most aerodynamic bars. Confirm the fit with your specific crossbars before ordering.
The lock is designed so the keys can only be removed when the locking points are fully sealed. That can help you check that the box is closed, but a lock is not a substitute for securing the carrier correctly or keeping valuable items out of sight. Compared with the other 14-cubic-foot option here, the Dvasovio lists broader crossbar compatibility but does not give the same detailed bar-width and hole-spacing limits.
Pros:
- 14 cubic feet of storage and a stated 130-pound capacity
- Dual-side opening for more flexible loading
- Pre-assembled brackets and stated compatibility with several bar styles
- Locking system indicates when the locking points are sealed
Cons:
- Its dimensions may not suit every roof or garage clearance
- Crossbar fit should be confirmed with the vehicle and rack maker
Verdict: Choose the Dvasovio if you want a mid-size box with dual-side access and a distinctive finish, and its dimensions and mounting system suit your vehicle.
QUAWIP 14 Cu Ft Box: Check the Crossbar Measurements First
This black hard-shell box provides 14 cubic feet of storage and lists a 130-pound load capacity. It is made from ABS and PMMA, and the product description says it is designed to protect cargo from the elements. Its passenger-side opening and support arm are intended to make it easier to load bulky luggage or camping gear from beside the vehicle.
Fit details are especially important with this model. The listed maximum crossbar width is 3 inches, and the mounting-hole distance ranges from 20.86 to 38.58 inches. Measure your crossbars and compare those numbers with the box’s mounting points before buying. The product description also says it fits round, square, factory, and most aerodynamic bars, but the stated size limits still matter.
The dual anti-theft locks are designed to prevent the box from opening while driving, and the key can only be removed when the lid is closed and locked. The instructions warn not to open both sides at the same time, so follow the supplied guidance when accessing the box. Compared with the Dvasovio, the QUAWIP gives more specific mounting measurements, which is helpful for checking fit in advance.
Pros:
- 14 cubic feet of storage with a stated 130-pound capacity
- Passenger-side access and a support arm for the lid
- Includes security keys and a locking indicator design
- Provides crossbar width and mounting-hole measurements
Cons:
- Crossbars must meet the stated width and spacing limits
- The instructions say not to open both sides at once
Verdict: The QUAWIP is a sensible option if its mounting measurements match your rack and you want a 14-cubic-foot box with passenger-side loading.
Thule Motion 3 XXL: The Largest Listed Capacity in This Group
The Thule Motion 3 XXL lists 21 cubic feet of space, making it the biggest option in this comparison by stated volume. That extra room may help families carrying several suitcases or a mix of travel and outdoor gear. The product description highlights a wing-shaped profile with a forward-leaning nose, which is designed to reduce drag and support fuel efficiency.
Thule’s PowerClick quick-mount system includes a torque indicator that clicks when the box is properly mounted. The SlideLock system separates locking from opening and indicates when the lid is securely closed. A wide handle is intended to make one-handed opening and closing easier. These features focus on setup and everyday access, though you should still check the box’s fit against your vehicle and roof-rack instructions.
The supplied details do not list a load limit or box dimensions, so you’ll need to confirm those before planning a full family load. A large box can also take up more roof space than a smaller carrier, so consider roof clearance and access to other rack equipment. Compared with the 14-cubic-foot choices, the Thule offers substantially more stated volume but lacks some of the fit measurements included in the QUAWIP description.
Pros:
- Largest listed capacity in this comparison at 21 cubic feet
- PowerClick mounting system includes a torque indicator
- SlideLock indicates when the lid is closed securely
- Wide handle is designed for smooth one-handed operation
Cons:
- The supplied product details do not state a load limit or dimensions
- Its larger size may not suit every roof or parking setup
Verdict: Consider the Thule Motion 3 XXL if your priority is the most listed storage space, but confirm its load limit, dimensions, and vehicle fit before purchasing.
Yakima DeepSpace: A Smaller Case for Focused Gear Storage
The Yakima DeepSpace is a 10-cubic-foot hard-shell case with a listed 100-pound load rating. Its textured ABS construction is described as lightweight and rugged. A wide-angle opening is designed to make it easier to place and find gear, while interior tie-down points help keep items in position during transit.
This model is smaller than the other boxes in the comparison, which can be a benefit if you only need space for a few bags or specific travel gear. It may be less suitable if your goal is to move several family suitcases out of the cabin. The product can mount on a vehicle roof or nest behind a truck cab, but it requires crossbars and is not for the EXO system.
Yakima includes an SKS lock for added security. Since the listed capacity is 10 cubic feet and the load rating is 100 pounds, plan the packing around both limits rather than volume alone. Compared with the larger options, the DeepSpace trades total space for a more compact storage case with stated tie-down points and multiple mounting uses.
Pros:
- Textured ABS shell and a stated 100-pound load rating
- Wide-angle opening for access to stored gear
- Interior tie-down points help secure items
- Can mount on a roof or behind a truck cab with the required crossbars
Cons:
- 10 cubic feet is less space than the other listed boxes
- Crossbars are required, and the product is not for the EXO system
Verdict: Pick the Yakima DeepSpace if you need a compact, lockable case for a smaller amount of gear rather than maximum family luggage space.
Curtainboro Dual-Side Box: High Load Limit With a Capacity Mismatch
The Curtainboro stands out for its stated 165-pound capacity and dual-side opening. Its product description says the box uses waterproof ABS material and has an aerodynamic profile intended to reduce wind resistance and driving noise. It also includes two keys and straps for securing cargo, according to the supplied details.
There is an important capacity discrepancy to resolve: the product title says 19.4 cubic feet, while the description says 17 cubic feet. The description also refers to both a 17-cubic-foot interior and a 165-pound capacity. Confirm the actual storage volume with the seller before buying, especially if you are comparing it with a 14- or 21-cubic-foot box.
The listing says this model is designed for most cars and SUVs with compatible roof racks, but it advises checking crossbar spacing, bar profile, roof clearance, and the vehicle’s roof-load rating. That last check matters: the box’s stated load capacity does not mean your vehicle roof can carry that much. Compared with the other dual-side options, the Curtainboro lists a higher load limit, but the conflicting volume figures make it harder to judge its usable space.
Pros:
- Dual-side opening for access from either side of the vehicle
- Stated 165-pound capacity
- Includes a locking system, two keys, and cargo straps
- Designed for compatible roof racks on many cars and SUVs
Cons:
- Capacity is inconsistent: the title says 19.4 cu ft, while the description says 17 cu ft
- Vehicle roof-load and crossbar compatibility must be checked separately
Verdict: The Curtainboro may suit families who value dual-side access and a higher stated load limit, but verify its actual capacity and rack fit before making a decision.
How to Choose a Roof Cargo Box for Family Travel
Match the Box to Your Vehicle’s Roof Limit
Check your vehicle owner’s manual for its roof-load limit, then account for the weight of the box, mounting hardware, and cargo. A box’s stated capacity is not the same as the amount your vehicle roof can safely carry. If the box or rack maker provides separate limits, follow the lowest applicable limit.
Measure Your Crossbars and Mounting Space
Before ordering, check your crossbar type, width, spacing, and the available roof area. Some listings give detailed mounting limits, while others only describe broad compatibility. Compare the measurements with your rack and pay attention to sunroofs, antennas, hatch clearance, and any other roof equipment.
Choose Enough Usable Capacity
Think about what you plan to move out of the cabin. A smaller case may work for a few bags or specific gear, while a larger box can make room for more bulky luggage. Compare both volume and weight capacity, and confirm unclear specifications with the seller. For the Curtainboro, the title and description list different volume figures, so get clarification before relying on either number.
Consider How You’ll Load and Unload
Opening style can make a difference in a crowded driveway, campsite, or parking lot. Dual-side access can let you reach the contents from either side, while a passenger-side opening may be convenient when loading away from traffic. Check how the lid is supported and follow the product’s instructions for opening and closing it.
Check Security and Cargo Tie-Downs
Locks can help keep a box closed and add a barrier against casual access, but they do not replace careful packing or a secure installation. Look for clear locking instructions and check that the lid is fully shut before driving. Interior tie-down points or included straps can help prevent items from shifting, but secure your load according to the manufacturer’s directions.
Think About Height, Clearance, and Driving
A rooftop box adds height to your vehicle, so consider low garages, parking structures, and drive-throughs along your route. A product description may claim an aerodynamic shape, but real-world effects depend on the vehicle, rack, box, speed, and load. Follow the vehicle and box instructions, and check that the installation remains secure during your trip.
Frequently Asked Questions
How much roof cargo space does a family need?
It depends on the number of travelers and what you plan to carry. Compare the volume of your luggage and gear with the box’s stated capacity, and leave room for items that need to stay in the cabin. Also make sure the loaded weight stays within your vehicle and rack limits.
Will any roof cargo box fit any car?
No. Compatibility depends on your roof rack, crossbar shape and spacing, mounting system, roof clearance, and the vehicle’s load limit. Check the box’s fit details against your exact rack setup before buying.
Is a higher box load rating always better?
Not necessarily. Your vehicle’s roof and rack may have a lower limit than the box. The allowed load is constrained by the lowest applicable rating, and you should include the weight of the box and mounting hardware when checking your vehicle’s limit.
Should I choose a dual-side-opening box?
Dual-side access can make loading easier when one side of your vehicle is blocked or harder to reach. It can be useful in a driveway or campsite, but follow the product instructions for operating the lid. For example, the QUAWIP description says not to open both sides at the same time.
Which option has the most listed capacity?
The Thule Motion 3 XXL lists 21 cubic feet, the largest clear capacity in this comparison. The Curtainboro title lists 19.4 cubic feet, but its description says 17 cubic feet, so confirm that specification before comparing it directly.
Can a roof cargo box keep luggage dry?
Some product descriptions state that their materials or construction are intended to protect cargo from the elements. The supplied information does not establish that every box is fully waterproof in all conditions. Pack sensitive items in suitable protective bags and follow the manufacturer’s care and loading guidance.
Final Recommendation
For families seeking a clear step up in storage space, the Thule Motion 3 XXL has the largest stated capacity in this group, though you should confirm its dimensions and load limit. The Dvasovio and QUAWIP offer 14 cubic feet with dual-side or passenger-side access, while the Yakima DeepSpace is better suited to a smaller, focused load. The Curtainboro’s higher stated load limit may appeal to some shoppers, but its conflicting capacity figures need to be clarified first. In every case, verify the box’s fit and your vehicle’s roof-load limit before packing for a trip.