Best Roof Storage For Cars: Bags and a Cargo Box Compared

#1 · Best Overall

1. Asinking 21-Cubic-Foot Roof Bag

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

Best for: Rough-weather soft-bag haulers.

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

Triple-reinforced welded seams give the Asinking 21-cubic-foot bag a practical defense against tearing and rain leaking through seams. Its 840D abrasion-resistant PVC and waterproof zipper with widened hook-and-loop flaps make it a soft carrier for travelers who need roof storage through rough conditions.

At 52 x 40 x 18 inches, the bag offers substantial room for trip gear while remaining a flexible alternative to a rigid box. Heavy-duty 840D PVC helps resist abrasion, and triple-reinforced welded seams address a common water-entry and durability concern at joins. The waterproof zipper is covered by six-inch-wide hook-and-loop flaps, adding another barrier over the closure. The supplied package also lists an anti-slip mat, six door hooks, extra straps, and a luggage lock.

Skip it if you need a rigid cargo box with a rear-opening lid; the SportRack Vista XL offers that format and 18 cubic feet.

Choose this Asinking bag for road trips where a large soft carrier, reinforced seams, and a covered waterproof zipper matter. Its 52-by-40-inch footprint needs adequate roof space, and it is not a rigid box for frequent quick access.

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 · Highest Capacity

2. RoofPax XXL Roof Bag

• Dimensions: 52"L x 39.37"W x 24"H
• Weight: 6.75 kg
• Material Type: Polyester

Best for: Large-vehicle oversized loads.

Why it ranks #2: The 28-cubic-foot capacity is the largest listed, and its four patented door-hook straps are designed for vehicles with or without racks.

A 28-cubic-foot capacity gives the RoofPax XXL more listed room than the other carriers here, with SUVs and larger vehicles named as its intended audience. Its four patented door-hook straps avoid routing straps inside the vehicle, and the system is listed for vehicles with or without racks.

The 52 x 39.37 x 24-inch bag provides a tall, roomy soft-storage option for larger travel loads. RoofPax specifies polyester construction and includes four patented door-hook straps as part of its mounting system; the listing also identifies compatibility with raised side rails and crossbars, as well as vehicles without roof racks. Ten heavy-duty tie-down straps are named in the title, giving buyers a substantial set of securing hardware alongside the extra-large capacity.

Skip it if you need a lower-profile soft bag; MeeFar's 21-cubic-foot carrier is listed at 22 inches tall rather than 24.

RoofPax suits SUV and larger-vehicle owners carrying bulky travel gear who want the roundup's largest stated soft-bag capacity. Its 24-inch height and broad 52-by-39.37-inch footprint are important roof-space considerations.

Listed on Amazon as: RoofPax XXL 28 cuft Car Rooftop Cargo Carrier Bag Extra Waterproof Car Roof Storage with 10 Heavy Duty Tie Down Straps and 4 Hooks Roof Bag Cargo Carrier for Top of Vehicle with/Without Rack

#3 · Waterproof Build

3. FIVKLEMNZ 21-Cubic-Foot Roof Bag

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

Best for: Rain-ready family road trips.

Why it ranks #3: This 21-cubic-foot bag uses 840D PVC, high-frequency welded seams and a double-layered waterproof cover, with a listed 12-month warranty.

A double-layered waterproof cover teams with high-frequency welded seams on the FIVKLEMNZ 21-cubic-foot bag, helping keep luggage dry through rain, snow, and long-distance travel. The 52-by-40-inch carrier gives family-trip packers extra roof storage without switching to a hard-shell box.

The 21-cubic-foot capacity and 52 x 40 x 17-inch dimensions provide room for bulky road-trip or camping gear while keeping the format soft and flexible. Its upgraded 840D PVC material is paired with high-frequency welded seams, and the double-layered waterproof cover adds protection around the stored luggage in difficult weather. The product is presented for travel, camping, and family vacations; a setup video is also listed to guide installation.

Skip it if you want a rigid, lockable box with rear access; the SportRack Vista XL has a rear-opening lid and included lock.

This FIVKLEMNZ suits families and campers who need soft, 21-cubic-foot roof storage with weather-focused construction. Its listed 52-by-40-inch footprint is a meaningful roof-space consideration, and the supplied specifications do not list included components.

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

#4 · Visibility Features

4. WORKPRO 21-Cubic-Foot Roof Bag

• Dimensions: 52"L x 40"W x 17"H
• Material Type: Polyvinyl Chloride (PVC)

Best for: Low-light visibility and secure straps.

Why it ranks #4: Its 21-cubic-foot capacity comes with ten reinforced adjustable straps, an anti-slip mat and a full-length rear reflective stripe.

A full-length rear reflective stripe helps make the WORKPRO bag more visible in low light, while ten reinforced adjustable straps secure its 21-cubic-foot load. The included anti-slip mat adds roof contact protection, pairing visibility and mounting details in a 52-by-40-inch soft carrier.

At 52 x 40 x 17 inches, this bag provides 21 cubic feet of soft storage for trip gear. Ten reinforced adjustable straps and larger buckles help keep the carrier secured, while the anti-slip mat is included to help prevent slipping and scratching the car roof. Triple heat-welded seams strengthen the joins between bag and straps, and the long rear reflective stripe increases visibility in low-light driving conditions.

Skip it if you want a rigid box with an included lock; SportRack Vista XL provides a hard enclosure and rear-opening access.

WORKPRO fits drivers who want 21 cubic feet of soft roof storage, adjustable straps, and rear reflective visibility. Choose another format if you need a rigid enclosure; this bag's notable benefits center on securing and protecting a flexible carrier.

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

#5 · Wide Straps

5. MeeFar 21-Cubic-Foot Roof Bag

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

Best for: Door-hook strap security.

Why it ranks #5: The 21-cubic-foot PVC bag includes four plus two door hooks and a lock; its 1.5-inch straps are listed as 50% wider than others.

Four plus two included door hooks let the MeeFar carrier secure through hooks rather than straps routed inside the car. Its 21-cubic-foot capacity and 800D PVC tarpaulin provide a large, waterproof soft-storage option, while a combination lock adds a way to secure luggage.

The 47 x 35 x 22-inch bag has a taller listed profile than several soft carriers, so buyers can weigh that shape against their roof and cargo needs. MeeFar pairs 800D PVC tarpaulin with high-frequency construction for waterproof, tearproof protection. Wider 1.5-inch straps and reinforced, well-stitched four-ply strap seams support the load, while the sealed zipper is described as easy to use. The six door hooks and combination lock round out the mounting and security features.

Skip it if you need a lower-profile 21-cubic-foot bag; WORKPRO's 21-cubic-foot carrier is listed at 17 inches tall.

MeeFar suits travelers who value door-hook attachment, broad straps, and a sealed zipper on a 21-cubic-foot bag. Its 22-inch height is a relevant shape consideration, so account for the carrier's tall profile when planning roof loads.

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

#6

6. Sailnovo 21-Cubic-Foot Roof Bag

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

Best for: High-capacity soft-bag travelers.

Why it ranks #6: It offers 21 cubic feet in 1000D PVC tarpaulin, with dimensions of 51.9 by 39.37 by 16.9 inches and a one-year warranty.

Sailnovo lists 21 cubic feet of capacity and room for luggage for around six people, giving family travelers a substantial soft carrier for roof storage. Its 1000D PVC tarpaulin is described as waterproof and durable, while the 51.9-by-39.37-inch footprint sets a clear space requirement.

The 51.9 x 39.37 x 16.9-inch bag offers broad, relatively low-profile storage for luggage, with the listed 21-cubic-foot capacity aimed at solving limited in-car space. Sailnovo specifies military-grade waterproof 1000D PVC tarpaulin, connecting the material to protection from wet conditions. For vehicles with bare roofs, the supplied facts say seals must be peelable for hooks, a specific installation consideration that buyers should account for before choosing this mounting approach.

Skip it if your bare-roof vehicle has seals that are not peelable for hooks; choose a carrier whose listed mounting method suits that roof.

Choose this Sailnovo for group travel when 21 cubic feet of soft storage and waterproof PVC are priorities. Bare-roof buyers need peelable seals for hooks, and the bag's nearly 52-by-39-inch footprint requires adequate roof area.

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

#7

7. Asinking 20-Cubic-Foot Roof Bag

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

Best for: Rack-free flexible packing.

Why it ranks #7: This 20-cubic-foot PVC option includes a non-slip mat, combination lock, storage bag and four anti-scratch door hooks, plus a two-year warranty.

The included four anti-scratch door hooks let this 20-cubic-foot Asinking carrier serve vehicles with or without a roof rack. A non-slip mat, combination lock, and storage bag come with the soft PVC carrier, making it a practical kit for travelers who need adaptable roof storage.

At 40 x 52 x 18.5 inches, the carrier offers a roomy footprint for luggage while its soft-shell construction remains easier to store than a rigid cargo box. The listed package includes four anti-scratch door hooks and a non-slip mat, supporting a setup that does not depend solely on a rack. A combination lock adds a way to secure the carrier, while the storage bag provides a place to keep it between trips.

Skip it if you need more than 20 cubic feet; RoofPax XXL 28 cuft provides a larger listed capacity for oversized loads.

Pick this Asinking model for drivers seeking a flexible soft carrier with hooks, a mat, and storage accessories included. Its 20-cubic-foot capacity is the key boundary for larger family loads, and its 40-by-52-inch footprint needs room on the roof.

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

#8

8. SportRack Vista XL Cargo Box

• Material Type: Plastic

Best for: Rigid-box rear-access buyers.

Why it ranks #8: The 18-cubic-foot UV-resistant ABS box has a rear opening, tool-free mounting hardware and a lock, but requires a compatible roof rack.

Rear opening keeps the SportRack Vista XL's 18 cubic feet of cargo accessible from the back of the vehicle, away from traffic. Its UV-resistant ABS construction and included lock make this rigid box a useful choice for rack-equipped drivers who want enclosed, lockable roof storage.

The 62.5 x 39 x 19-inch box provides a defined enclosure for gear, while its 100-pound load capacity gives buyers a listed limit to factor into packing. Tool-free mounting hardware supports installation and removal without tools, and the rear-opening lid can make roadside access more convenient than reaching from the traffic side. It fits SportRack systems, square and round bars, and most factory racks; the supplied details direct buyers to a fit guide.

Skip it if you need soft storage for a vehicle without a roof rack; Asinking's 20-cubic-foot carrier is listed for vehicles with or without racks.

The Vista XL fits drivers who want a rigid, lockable enclosure and rear access for rack-mounted travel gear. Keep its 100-pound load limit in mind, and check the rack fit details before choosing this hard box.

Listed on Amazon as: SportRack Vista XL Rear Opening Cargo Box,Black

#9

9. Sailnovo 20-Cubic-Foot Roof Bag

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

Best for: Organized crossbar installations.

Why it ranks #9: Its 20-cubic-foot capacity and 1000D Oxford cloth are paired with six door hooks, two extra straps and a carrying bag; fit guidance is roof-specific.

Sailnovo's detachable straps thread through four metal rings for a crossbar setup, giving rack-equipped buyers a defined way to hold the 20-cubic-foot bag tight. Its 1000D Oxford cloth body, reinforced dual stitching, and waterproof zippers support travel storage with a mix of mounting hardware.

The 51 x 39 x 17-inch carrier is listed to hold four to six medium suitcases, along with camping tents or sleeping bags, making its 20-cubic-foot capacity useful for varied trip loads. Heavy-duty buckles, sturdy door hooks, and reinforced dual stitching support secure attachment, while the supplied two extra luggage straps add options. The installation guidance distinguishes roof types: for crossbars with spacing over 53 inches, it instructs users to feed detachable straps through the bag's four metal rings.

Skip it if you cannot use the listed detachable-strap setup for crossbars spaced over 53 inches; check Sailnovo's roof-type instructions before selecting it.

This Sailnovo is a fit for travelers wanting a soft 20-cubic-foot carrier with multiple hook and strap options. Its crossbar guidance calls out spacing over 53 inches for detachable straps, making roof configuration central to the setup.

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

#10

10. FIVKLEMNZ 15-Cubic-Foot Roof Bag

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

Best for: Compact waterproof trip packing.

Why it ranks #10: This smaller 15-cubic-foot bag uses 840D PVC and includes an anti-slip mat, reinforced straps, six door hooks and a luggage lock.

At 15 cubic feet and 46 by 34 inches, the FIVKLEMNZ bag uses a smaller listed footprint than many larger roof carriers. Its 840D PVC, welded seams, and double-layered waterproof cover target weather protection for road trips, camping, and family travel.

This soft carrier's 15-cubic-foot capacity offers a way to move gear onto the roof while keeping the bag's listed length and width to 46 and 34 inches. The 840D PVC material works with high-frequency welded seams and a double-layered waterproof cover to protect luggage during rain, snow, and long-distance trips. The title also lists an anti-slip mat, reinforced straps, six door hooks, and a luggage lock, offering multiple parts for mounting and securing the load.

Skip it if you need 21 cubic feet of soft storage; FIVKLEMNZ 21 Cubic Rooftop Cargo Carrier offers more listed capacity.

Choose this FIVKLEMNZ when a smaller soft carrier suits your load and its waterproof construction is a priority. The 15-cubic-foot capacity is the main boundary; consider whether it holds your trip gear before setting aside roof space.

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