Ever packed your car to the brim for a road trip, only to realize the suitcases just won’t fit? That feeling of needing more space is frustrating! Suddenly, that dream vacation feels a little cramped. It’s a common problem for families and adventurers alike. Choosing the perfect roof cargo box can solve this space puzzle, but with so many shapes, sizes, and features out there, knowing where to start can feel overwhelming. You want something strong, easy to use, and that won’t break the bank, right?
Don’t worry, we’ve got your back! This guide cuts through the noise. We will break down everything you need to know about roof cargo boxes. You will learn what makes a box great for your needs. By the end, you will feel confident picking the best one for your next big adventure. Let’s explore how to unlock that extra packing power!
Top Roof Cargo Box Recommendations
- 18 cubic foot (510 L) internal cargo capacity
- Made from durable UV-resistant ABS material
- Rear opening for easy access away from traffic
- Tool-free mounting hardware for easy installation and removal
- Includes key and lock to secure contents in the box, and the box to your rack
- Rugged & Weatherproof Construction：Our rooftop cargo carrier built from premium ABS material, this hard shell rooftop cargo box is waterproof and UV-resistant. It shields your luggage from rain, snow, and sun, while the aerodynamic design minimizes wind noise and reduces fuel consumption—a perfect companion for any road trip.
- Spacious 12 Cubic Feet of Storage:Offering a generous 12 cubic feet (340L) of extra storage, this cargo box measures 54.3"L x 31.5"W x 13.4"H and supports up to 165 lbs. Easily expand your vehicle’s cargo capacity for camping, vacations, and everyday travel.
- Universal Roof Rack Compatibility:Compatible with all vehicles equipped with a roof rack, including cars,vans, and SUVs. Please check your vehicle’s roof rack specifications before purchasing to ensure a proper fit.
- Easy Dual-Sided Access & Security:Features a convenient dual-sided opening for quick loading and unloading from either side of your vehicle. Includes 2 secure locks and 2 straps to keep your gear protected. Remember to keep one side locked while accessing the other for added safety.
- Easy Assembly: Enjoy a quick and hassle-free setup! Our rooftop cargo box comes complete with all necessary components and clear instructions
- Spacious 14 Cu Ft Storage: This rooftop cargo carrier delivers a generous 390L (14 cubic feet) of space, making it the ideal car top carrier for family vacations, road trips, and sports adventures. Easily store camping gear, luggage, or ski equipment and free up valuable cabin room.
- Rugged Hard Shell Protection: Made from tough, UV-resistant ABS, this rooftop cargo carrier hard shell guards your belongings against rain, sun, dust, and road debris—providing reliable protection in any weather conditions.
- Secure & Lockable Design: The roof cargo box is equipped with built-in straps and a dependable locking mechanism, plus included keys. Keep your items stable and safely locked inside the cargo box on every journey.
- High Capacity & Hassle-Free Mounting: With a robust 165 lbs weight limit, this cargo box installs quickly and securely onto most vehicle roof racks or crossbars—no tools required. Always check your roof rack compatibility before purchase.
- Aerodynamic & Universal Fit: The streamlined, low-profile roof cargo box design reduces wind noise and drag, while fitting most cars, SUVs, and vans. Enjoy extra rooftop storage without compromising your driving comfort or vehicle performance.
- 【UNIVERSAL】This extra long rooftop cargo carrier fits for vehicles with cross bars only, no tool assembly & installation. Increases vehicle cargo space without impeding on passenger comfort.
- 【LARGE CAPACITY】Rooftop cargo box provides 11 cubic feet of additional storage space. The maximum storage capacity of 110lbs when evenly distributed. And it can be opened up to 14" wide to store bulky items.
- 【ROBUST DESIGN】Constructed of rugged, impact-resistant ABS material for long-lasting durability, able to protect your contents from exposure to the inclement weather.
- 【SECURITY LOCKING SYSTEM】Includes key and lock to secure valuables in the box, to ensure cargo safety and s proper lid alignment. It can open from the side and stays open til you close it.
- 【SPECIFICATION】Size: 11 Cubic Feet Internal Storage, 110lbs Max Capacity | Overall Dimensions: 53" L x 34" W x 15" H | Surface Finish: Black Glossy Smooth Finish
- Road Trip Ready: This heavy-duty hard shell roof top cargo carrier is your ideal travel companion, perfect for hauling gear to parks, beaches, and sports fields. Its sleek aerodynamic design reduces wind drag and noise while fitting all SUV, truck, and van with roof racks. With 17.7 cu ft capacity, it's ideal for camping trips and family vacations
- Built to Last: Built with rugged ABS plastic and UV-resistant black coating, our waterproof rooftop cargo box withstands harsh weather while protecting your belongings. The 165 lb weight capacity handles bulky items with ease, compatible with round, square, and factory roof bars for all-purpose fit
- Maximize Cargo without Crowding Passengers: Expand your vehicle's capacity with this 70"L x 31"W x 15"H hard-shell roof top mount car storage solution. It securely carries luggage, sports equipment, and outdoor gear without compromising passenger comfort - perfect for road warriors and adventure seekers
- Dual-Sided Access & Lockable Security: Keep valuables safe with the included security keys on this rooftop cargo carrier. The dual-sided opening allows easy loading from either side of your vehicle, while the reinforced hard-shell design prevents theft and weather damage
- Easy Install, No Tools Needed: Mount this roof cargo box in minutes with the tool-free installation system - no mechanic needed! Includes all hardware and clear instructions for hassle-free setup on your SUV, truck, or van. Get ready for adventure faster
- 【840D CHAMPION QUALITY MATERIAL】 Made with heavy-duty 840D abrasion-resistant PVC fabric, this ultra-durable car roof cargo carrier stands up to any rough treatment or harsh weather. Better still, the triple-reinforced welded seams make it hard to tear or rip for years to come.
- 【MORE THAN WATERPROOF】 Featuring waterproof zipper wrapped with 6 inches widened velcro zipper flaps, our vehicle cargo carriers will exceed your expectations with the waterproof effet. The reinforced seams will make it possible "zero leakage" even in downpours.
- 【EASY INSTALLATION】 Our roof rack cargo carrier comes with an anti-slip mat and 8 thickened adjustable straps that will keep the cargo bag in place. The smooth zipper, adjustable straps, door hooks and robust buckles allows you to effortlessly secure it to any car.
- 【SECURE FIT & LARGE CAPACITY】 Our 21 cubic feet rooftop cargo bag is compatible with vehicles with our without roof rack, the large capacity can keep the shape nicely, even when holding many luggage cases, blanket, tents, sleeping bags and more.
- 【PACKAGE LIST】You will receive 1x roof top carrier bag, 1x storage bag, 1x anti-slip mat, 6x padded door hooks, 2x extra luggage straps, 1x luggage lock.
- Durable, Weather-Resistant rooftop cargo box: Made from premium ABS material, this rooftop cargo carrier shields your gear from rain, snow, and sun, and features an aerodynamic design that minimizes wind noise—making it an excellent alternative or addition to popular options like the thule rooftop cargo carrier.
- Spacious Storage for Every Adventure: With a generous 14 cubic feet capacity, this roof rack cargo carrier supports up to 165 lbs, delivering ample extra space for camping, travel, or daily needs, and expanding your vehicle’s capability for big trips.
- Universal Fit for Most Vehicles: This rooftop cargo box is designed to install easily on most cars, vans, and SUVs equipped with a roof rack cargo carrier system, so you can enjoy added cargo space whether upgrading your current setup or organizing family getaways.
- Easy Dual-Side Access with Secure Locks: Quickly load and unload your rooftop cargo carrier from either side of your vehicle, while secure locks and straps keep your belongings protected—just like the convenience found in a thule rooftop cargo carrier.
- Hassle-Free Setup: The rooftop cargo box comes with all the necessary hardware and clear instructions, making installation on your roof rack cargo carrier system quick and straightforward so you’re adventure-ready in minutes.
- Secure & protect your gear in this 18 cubic ft. HDPE plastic hard shell vehicle cargo carrier; high-capacity interior dimensions 57 L x 38 1/2 W x 17 3/4 H inches; aerodynamic design for fuel efficiency
- Weatherproof storage for your luggage with a four corner locking system, front latch, and weather-tight seal for ultimate car rooftop protection and security
- Easy & convenient loading and unloading from either side of the car make for smooth travel and hassle-free storage
- No tools required, easy assembly and installation on Vehicles with Roof Luggage Rails and Crossbars.All mounting hardware and simple instructions are included to get you safely on the road quickly. The base is pre-drilled for 24in crossbar spacing - if your vehicles crossbars are NOT adjustable the plastic base can be re-drilled to match your vehicle (20in to 30in bar spacing)
- Made in USA, limited lifetime guarantee. The JEGS car top carrier’s high-quality construction and performance give you peace of mind
Your Essential Roof Cargo Box Buying Guide
A roof cargo box is a fantastic helper for road trips. It gives you extra space for luggage, camping gear, or sports equipment. Choosing the right one takes a little thought. This guide helps you pick the best box for your needs.
Key Features to Look For
When shopping, certain features make a big difference in how useful your box is.
Capacity and Size
- Volume: Boxes come in different sizes, usually measured in liters. A family going on a week-long vacation needs a bigger box (400 liters or more). A couple on a weekend trip might only need a smaller one (250-350 liters).
- Length vs. Width: Measure your vehicle’s roof space. Make sure the box fits without blocking your trunk opening or touching the antenna.
Security and Access
- Locking System: Always choose a box with strong, built-in locks. You want your gear safe from thieves.
- Opening Mechanism: Dual-sided opening is a huge plus. This lets you open the box from either the driver’s or passenger’s side. It makes loading and unloading much easier, especially in tight parking spots.
Aerodynamics and Noise
Look for boxes with a sleek, low-profile design. A good shape cuts down on wind noise (whistling) while you drive fast. This makes your trip much quieter.
Important Materials Used in Construction
The material affects how long the box lasts and how much it weighs.
ABS Plastic
Most good boxes use ABS plastic. This material is strong and lightweight. It resists dents well. High-quality ABS plastic handles sun exposure without cracking easily.
Fiberglass
Fiberglass boxes are often the strongest and most aerodynamic. However, they usually cost more money. They offer excellent protection against weather.
UV Resistance
Ensure the material has UV inhibitors. Sunlight fades and weakens plastic over time. A UV-resistant shell stays strong for years.
Factors That Improve or Reduce Quality
Quality isn’t just about the material; it’s also about the engineering.
Mounting System
A fast, easy mounting system is crucial. Look for tool-free mounting clamps. These systems grip your crossbars securely. A poor mounting system can vibrate loose on long drives, which is dangerous.
Weight Capacity
Every box has a maximum weight limit. Do not overload it. Check your vehicle’s roof weight rating too; sometimes the car roof limits the weight before the box does.
Weatherproofing
Excellent quality boxes have strong seals around the edges. These seals keep rain and dust out. Poorly sealed boxes let moisture in, ruining your stored items.
User Experience and Use Cases
Think about how you plan to use the box most often.
Road Trips and Vacations
If you pack bulky items like strollers or large suitcases, you need a box with high volume and wide opening access. Dual-sided opening becomes very important here.
Winter Sports
If you carry skis or snowboards, check the box’s internal length. Make sure your longest ski or board fits completely inside. Some boxes are specifically designed for long, narrow gear.
Daily Driving
If you plan to keep the box on your car all the time, prioritize aerodynamics and low weight. A heavy, bulky box hurts your gas mileage significantly.
Frequently Asked Questions (FAQ) About Roof Cargo Boxes
Q: Will a roof box hurt my gas mileage?
A: Yes, any added item on the roof increases wind resistance. A well-designed, aerodynamic box hurts mileage less than a cheap, boxy one. Expect a small drop in MPG.
Q: Can I wash my roof cargo box?
A: Absolutely. Most boxes can be washed with mild soap and water, just like your car. Avoid high-pressure washing directly on the seams.
Q: How difficult is it to install a roof box?
A: Installation difficulty varies. Boxes with quick-clamp systems can often be installed in under 30 minutes by one person. Always read the instructions carefully.
Q: Do I need roof crossbars?
A: Yes. Roof cargo boxes attach to crossbars, which run across the width of your roof. If your car does not have factory roof rails, you must buy crossbars separately.
Q: What is the difference between a cargo box and a cargo basket?
A: A cargo box is fully enclosed and locks, protecting items from weather and theft. A cargo basket is an open tray that requires you to use waterproof bags to protect your gear.
Q: Can I open my trunk if the box is installed?
A: This depends on the box size and your car. Longer boxes mounted too far forward might block the trunk lid from opening fully. Measure carefully before buying.
Q: Are roof boxes waterproof?
A: Good quality boxes are highly weather-resistant and keep most rain out. No box is 100% guaranteed against extreme flooding or pressure washing, but they handle normal driving rain very well.
Q: How much weight can my roof safely carry?
A: Check your vehicle owner’s manual for the dynamic (moving) roof weight limit. This limit is usually lower than the static (parked) limit.
Q: What is UV resistance in a box?
A: UV resistance means the plastic has special additives that stop the sun’s rays from making the plastic brittle or faded over time.
Q: Should I buy a hard or soft cargo carrier?
A: Hard carriers (boxes) offer superior security and weather protection. Soft carriers (bags) are cheaper and store easily when empty, but they offer less protection.