Best Car Roof Bags for Road Trips and Extra Cargo

#1 · Best Overall

1. Asinking 21 Cu Ft

• Dimensions: 52"L x 40"W x 18"H
• Weight: 4.24 kg
• Material: Polyvinyl Chloride (PVC)

Best for: Reinforced-seam weather protection.

Why it ranks #1: Its 21-cubic-foot capacity, 840D PVC, triple-reinforced welded seams, anti-slip mat, six door hooks, extra straps, and lock form a versatile package.

Triple-reinforced welded seams distinguish this Asinking roof bag, adding a barrier against tears and water leaking through the seams. Its 840D abrasion-resistant PVC and waterproof zipper with widened hook-and-loop flaps extend the weather-focused construction to the fabric and closure, making it a practical choice for travelers carrying luggage on exposed vehicle roofs.

The 840D PVC fabric is described as abrasion-resistant, while triple-reinforced welded seams target both tearing and seam leaks; together, those details support use on rough-weather trips. A waterproof zipper and six-inch widened hook-and-loop flaps add coverage over the closure, an important point for keeping packed items sheltered. The 52-by-40-by-18-inch dimensions define its roof footprint, and the title lists an anti-slip mat, six door hooks, extra straps, and a luggage lock.

Skip it if you need maximum listed capacity for bulky moving loads; Mockins MA-RB-40BLK-72X48X20-89 offers 40 cubic feet.

This Asinking suits travelers who value reinforced seams and extra zipper coverage, with listed accessories for securing cargo. Its 52-by-40-inch footprint and 21-cubic-foot capacity set the practical boundary for roof space and load size.

Listed on Amazon as: 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

#2 · Best Double-Layer Cover

2. FIVKLEMNZ 21 Cu Ft

• Dimensions: 52"L x 40"W x 17"H
• Weight: 4.68 kg
• Material: Oxford Cloth

Best for: Rain-ready family road trips.

Why it ranks #2: This 21-cubic-foot bag combines 840D PVC and high-frequency welded seams with a double-layered waterproof cover for travel in wet conditions.

A double-layered waterproof cover paired with high-frequency welded seams is the FIVKLEMNZ bag’s key weather-protection combination, helping keep packed luggage dry through rain, snow, and long-distance travel. Its 21-cubic-foot capacity adds substantial cargo room for road trips, camping, or family vacations, with a 52-by-40-inch footprint.

The 840D PVC material and welded seams support the waterproof cover’s role in protecting cargo from wet weather, while the 21-cubic-foot interior makes room for trip gear above the vehicle. At 52 by 40 by 17 inches, its broad shape suits buyers prioritizing capacity; plan the roof load around those dimensions. The supplied setup video can guide initial assembly, and the listed product dimensions provide a practical reference when considering roof space.

Skip it if you need room for an especially large load; Mockins MA-RB-40BLK-72X48X20-89 provides 40 cubic feet.

Choose this FIVKLEMNZ for family travel or camping when weather protection and 21 cubic feet of added storage are priorities. Its 52-by-40-inch footprint is a relevant roof-space consideration before loading.

Listed on Amazon as: FIVKLEMNZ 21 Cubic Rooftop Cargo Carrier Waterproof Soft Car Roof Bag

#3 · Best 1000D Material

3. Sailnovo 21 Cu Ft

• Dimensions: 51.9"L x 39.37"W x 16.9"H
• Material: Polyvinyl Chloride (PVC)

Best for: Six-person luggage capacity.

Why it ranks #3: It offers 21 cubic feet in a 51.9-by-39.37-by-16.9-inch footprint and specifies 1000D PVC tarpaulin for weather-resistant cargo storage.

Sailnovo’s 21-cubic-foot capacity is listed to carry around six people’s luggage, making this soft roof bag a fit for group travel with limited cabin storage. Its 1000D PVC tarpaulin is described as waterproof and durable, and the 51.9-by-39.37-by-16.9-inch dimensions show the space it occupies on the roof.

The 21-cubic-foot interior is presented as room for around six people’s luggage, while its 51.9-by-39.37-by-16.9-inch dimensions help buyers plan the roof footprint. Sailnovo specifies military-grade waterproof 1000D PVC tarpaulin, tying the material to protection from wet conditions. For bare roofs without racks, the supplied information notes that seals must be peelable for hooks, an important installation condition. The listed package includes the car roof bag; setup video guidance is also available.

Skip it if you have a bare roof with non-peelable seals; MIKKUPPA QVM069MK lists six door hooks that attach to door frames without damage.

This Sailnovo suits group trips needing 21 cubic feet and a waterproof 1000D PVC bag. For a bare roof, the listed peelable-seal requirement for hooks is a decisive installation boundary.

Listed on Amazon as: Sailnovo Car Rooftop Cargo Carrier 21 Cubic Feet Waterproof Soft Roof Bag

#4 · Most Cargo Capacity

4. Mockins 40 Cu Ft

• Dimensions: 72"L x 48"W x 20"H
• Weight: 16.5 lb
• Material: 840D, Vinyl

Best for: XXL moving and family loads.

Why it ranks #4: Its 40-cubic-foot capacity is the largest listed, with 840D vinyl and a mat, lock, multiple straps, six door hooks, and two trunk hooks.

A 40-cubic-foot capacity is the defining feature of this Mockins XXL carrier, giving movers and large-group travelers substantially more rooftop cargo room than smaller bags. Its 72-by-48-by-20-inch dimensions accompany 840D abrasion-resistant vinyl, while the included mat, buckle and ratchet straps, door hooks, trunk hooks, lock, and storage bag make for a broad accessory kit.

The 72-by-48-by-20-inch footprint and 40-cubic-foot capacity support bulky loads such as suitcases, sleeping bags, and tents, and the listing says it fits vehicles with or without crossbars, side rails, and roof racks. 840D abrasion-resistant vinyl is paired with waterproof zippers, protective flaps, and hook-and-loop closures for coverage around the opening. The included three buckle straps, three ratchet straps, six door hooks, and two trunk hooks provide several listed securing components; the mat and storage bag round out the kit.

Skip it if you prefer a lighter listed carrier; Asinking Black weighs 4.24 kilograms, versus this bag’s listed 16.5 pounds.

This Mockins is for moving or group trips that call for 40 cubic feet and a versatile securing kit. Its 72-by-48-inch footprint and 16.5-pound listed weight are important handling and roof-space considerations.

Listed on Amazon as: Mockins 40 CuFt XXL Car Roof Bag 72"x48"x20" Soft-Shell 840D w/Accessories

#5

5. MeeFar 21 Cu Ft

• Dimensions: 47"L x 35"W x 22"H
• Weight: 4.88 kg
• Material: Polyvinyl Chloride (PVC)

Best for: Wide-strap 21-cubic-foot loads.

Why it ranks #5: The 21-cubic-foot bag uses 800D PVC tarpaulin and includes four plus two door hooks, a combination lock, and reinforced strap seams.

MeeFar pairs 21 cubic feet of storage with 1.5-inch-wide straps, listed as 50% wider than others, for a spacious carrier with broad securing straps. Its 800D PVC tarpaulin is described as waterproof and tearproof, and the kit includes four plus two door hooks and a combination lock for travelers carrying luggage on the roof.

The 47-by-35-by-22-inch bag offers 21 cubic feet, with the listing saying it can hold four to six suitcases. Its 800D PVC tarpaulin and high-frequency voltage technology are presented as waterproof and tearproof construction, while reinforced, welded, well-stitched four-ply strap seams support the strap attachment points. The 1.5-inch straps are described as 50% wider than others. Four plus two free door hooks and a combination lock add listed securing options.

Skip it if you need a lower-profile listed size; Sailnovo Sailnovo-SOUS5033 measures 17 inches high.

MeeFar suits travelers carrying several suitcases who want 21 cubic feet, wide straps, and six listed door hooks. Its 22-inch height is a key roof-load consideration, so compare the dimensions with your available space.

Listed on Amazon as: Car Roof Bag Rooftop Cargo Carrier Bag Waterproof 21 Cubic Feet roof Cargo

#6

6. Asinking 20 Cu Ft

• Dimensions: 40"L x 52"W x 18.5"H
• Weight: 2.39 kg
• Material: Polyvinyl Chloride (PVC)

Best for: Four-hook setup with storage.

Why it ranks #6: This 20-cubic-foot PVC carrier includes a non-slip mat, combination lock, storage bag, and four anti-scratch door hooks, plus a stated two-year warranty.

A supplied non-slip mat, combination lock, storage bag, and four anti-scratch door hooks give this 20-cubic-foot Asinking carrier a useful accessory set in the box. The title describes it as waterproof and non-rip, while its 40-by-52-inch base gives buyers a concrete footprint to consider when planning rooftop cargo.

The included non-slip mat provides a layer between the carrier and roof, and the four door hooks offer a listed securing option for vehicles without a rack. A combination lock and storage bag support luggage security and stowing the carrier between trips. The 20-cubic-foot capacity adds cargo space, while the 40-by-52-by-18.5-inch dimensions help assess how the bag occupies the roof. The product title identifies its material as waterproof and non-rip.

Skip it if you want six door hooks in the listed kit; FIVKLEMNZ FIVKLEMNZ612 includes six.

This Asinking fits buyers who want a 20-cubic-foot carrier with a mat, hooks, lock, and storage bag supplied. Consider its 40-by-52-inch roof footprint and four-hook setup when deciding whether it suits your vehicle.

Listed on Amazon as: Asinking Car Rooftop Cargo Carrier Bag, 100% Waterproof Non-Rip 20 Cubic Feet Car Roof Bag for All Vehicles with/Without Rack, Includes Non-Slip Mat, Luggage Lock, 4 Door Hooks, Storage Bag

#7

7. Sailnovo 20 Cu Ft

• Dimensions: 51"L x 39"W x 17"H
• Weight: 8.3 lb
• Material: 1000D Oxford cloth,The Zipper lining is made…

Best for: Oxford-fabric camping hauler.

Why it ranks #7: Its 20-cubic-foot capacity and 1000D Oxford cloth construction come with two extra straps, six door hooks, and a one-year warranty.

A 1000D Oxford-cloth body sets this Sailnovo apart from PVC-fabric carriers, with a PVC-lined zipper and 20 cubic feet of room for travel or camping gear. The 51-by-39-by-17-inch bag is listed to hold four to six medium suitcases, and its package includes extra straps and door hooks for securing cargo.

The 1000D Oxford cloth supplies the main bag material, while the zipper lining is PVC; these distinct materials help buyers understand the construction around the closure. Its 20-cubic-foot capacity and 51-by-39-by-17-inch dimensions accommodate a substantial load, including the listed four to six medium suitcases, tents, or sleeping bags. Heavy-duty buckles, waterproof zippers, sturdy door hooks, and reinforced dual stitching support fastening and closure. The listing also specifies a crossbar spacing requirement over 53 inches and no sunroof for that setup.

Skip it if you have a sunroof or crossbars spaced 53 inches or less; MIKKUPPA QVM069MK lists rack and rack-free installation options.

Choose this Sailnovo for camping or travel loads when Oxford fabric, 20 cubic feet, and the included extra straps suit your needs. Its listed crossbar setup has a specific spacing and sunroof boundary to consider.

Listed on Amazon as: Sailnovo Rooftop Cargo Carrier roof Bag, 20 Cuft fit Cars with/Without Rack

#8

8. MIDABAO 20 Cu Ft

• Dimensions: 51.1"L x 39"W x 17"H
• Weight: 3.94 kg
• Material: Polyvinyl Chloride (PVC) Nylon

Best for: Coated-zipper 20-cubic-foot storage.

Why it ranks #8: The 20-cubic-foot PVC-and-nylon bag measures 51.1 by 39 by 17 inches and is described as fitting cars with or without roof racks.

MIDABAO combines a 20-cubic-foot capacity with coated zippers, focusing this roof bag on added cargo room and closure protection. Its 51.1-by-39-by-17-inch dimensions provide a clear footprint for roof planning, and the listing says it fits cars with or without roof racks and includes an anti-slip mat.

The 20-cubic-foot capacity and 51.1-by-39-by-17-inch dimensions make this a sizable carrier for buyers who need more room than a small travel bag. Its coated zippers are a specific closure feature, while the included anti-slip mat adds a listed component between carrier and vehicle roof. The product description states that it fits cars with or without roof racks, which broadens the listed vehicle setup options. PVC nylon is the supplied material specification.

Skip it if you want one more cubic foot of listed space; FIVKLEMNZ Upgrade Version offers 21 cubic feet.

MIDABAO suits buyers seeking 20 cubic feet, coated zippers, and an anti-slip mat for cars with or without racks. Its 51.1-by-39-inch footprint remains a practical roof-space consideration.

Listed on Amazon as: MIDABAO 20 Cubic Waterproof Duty Car Roof Top Carrier-Car Cargo Roof Top Bag, Waterproof & Coated Zippers includes Anti Slip Mat with or without Racks (20 Cubic Feet)

#9

9. MIKKUPPA 15 Cu Ft

• Material: Polyvinyl Chloride (PVC)

Best for: Foldaway rack-free travel storage.

Why it ranks #9: This 15-cubic-foot PVC bag is specified for vehicles with or without racks and includes an anti-slip mat, combination lock, safety hooks, and storage bag.

A 15-cubic-foot bag that folds flat into its carry pouch gives the MIKKUPPA a practical storage angle for travelers who do not want a bulky carrier between trips. It is listed for vehicles with or without roof racks, using crossbars on rack-equipped cars or six door hooks on rack-free vehicles.

The listed rack and rack-free options give buyers two installation paths: strap the bag to crossbars or use six door hooks that attach to door frames without damage. Its 15 cubic feet are described as enough for four suitcases or full camping gear, helping define its load role. When not in use, the bag folds flat into the carry pouch for storage. The included anti-slip mat, combination lock, safety hooks, storage bag, and manual supply useful setup and stowing components.

Skip it if you need more than 15 cubic feet for a group’s luggage; Sailnovo SL-2WS1WQ lists 21 cubic feet.

Choose MIKKUPPA for four suitcases or camping gear when rack-free hook installation and compact storage matter. Its 15-cubic-foot capacity is the key limit for larger group loads.

Listed on Amazon as: MIKKUPPA Car Rooftop Cargo Carrier, 15 Cubic Feet, Waterproof PVC Roof Bag

#10

10. FIVKLEMNZ 15 Cu Ft

• Dimensions: 46"L x 34"W x 17"H
• Weight: 6.6 lb
• Material: Polyvinyl Chloride (PVC)

Best for: Compact rack-free trip cargo.

Why it ranks #10: It remains a relevant smaller option, with 15 cubic feet, 840D PVC, welded seams, a double-layered cover, and listed rack-free compatibility.

A 15-cubic-foot capacity in a 46-by-34-inch footprint makes this FIVKLEMNZ a smaller-format option for adding rooftop luggage space. Its 840D PVC construction, high-frequency welded seams, and double-layered waterproof cover focus on keeping gear dry in wet travel conditions, while the title lists an anti-slip mat, reinforced straps, six door hooks, and a luggage lock.

The 15-cubic-foot interior offers extra room for travel or camping gear without the larger footprint of the brand’s 21-cubic-foot model. High-frequency welded seams and the double-layered cover support the stated waterproof protection, while 840D PVC supplies heavy-duty material. Its 46-by-34-by-17-inch dimensions help buyers assess roof space. The listed anti-slip mat, reinforced straps, six door hooks, and lock provide multiple components for positioning and securing the bag.

Skip it if you need room for a larger family load; MIDABAO M-02 lists 20 cubic feet of cargo space.

Pick this FIVKLEMNZ for trips where a 15-cubic-foot bag and its listed securing accessories suit the load. Its 46-by-34-inch footprint is smaller than many large carriers, but capacity remains the main boundary.

Listed on Amazon as: 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