RoofPax Expandable Rooftop Cargo Bag 15–19 cu ft — Waterproof, Double-Zip Storage

This RoofPax expandable rooftop cargo bag is a waterproof, 15–19 cubic-foot soft carrier with double zippers and heavy-duty tie-down straps for secure vehicle-top storage.

Whether you're packing for a road trip, a weekend getaway, or transporting bulky gear, the RoofPax rooftop cargo bag gives you weatherproof, expandable storage that fits cars with or without roof racks. Made from polyester with sealed seams and double waterproof zippers, it’s built to shield luggage from rain, dust, and road spray while attaching quickly using either included patented door-hook straps or existing roof rails and crossbars.

How does this bag keep my gear dry in bad weather?

The RoofPax carrier uses high-grade polyester fabric with a waterproof coating, double-sealed seams and water-resistant zippers to block moisture. The design minimizes water ingress points and the included Velcro straps reduce strap movement that can lift seams.

• Waterproof polyester shell with durable coating
• Double waterproof zippers and dual-seam construction
• 10 Velcro strap covers to prevent flap movement
• Sealed joints around attachment points to limit water entry

Will it fit my car if I don’t have roof rails or crossbars?

Yes — RoofPax includes patented 4 door-hook straps that anchor under the vehicle doors so you don’t need factory rails or aftermarket crossbars. The bag also works with raised side rails, roof racks, or crossbars when available for extra security.

• Patented door-hook straps included for rack-free installation
• 10 heavy-duty tie-down straps for side and rear anchoring
• Quick setup that installs in minutes without tools
• Compatibility with most cars, SUVs and hatchbacks

How much gear can the 15/19 cu ft size hold and how does the expandable feature work?

The carrier expands from 15 up to 19 cubic feet to accommodate extra luggage or bulky items like blankets, compact chairs, or soft duffels. Expansion is simple: unzip the extension panel to gain additional height and volume, then secure contents with the internal straps and external tie-downs.

• Standard 15 cu ft holds several medium suitcases or multiple duffels
• Expandable to 19 cu ft for added space when needed
• Internal compression straps help stabilize the load
• External heavy-duty straps keep the bag tightly secured to the roof

What safety and warranty protections come with the RoofPax bag?

RoofPax prioritizes safety by supplying reinforced straps and patented door hooks to prevent shifting while driving. The product also includes extended warranties and responsive customer support to address zipper or fabric issues over time.

• Patented 4 door hook system for secure anchoring
• Heavy-duty tie-down straps for side and back stability
• Lifetime warranty on zippers and 5-year fabric warranty
• 24/7 customer support and storage bag included for convenience

Who is this for? If you take frequent road trips, transport seasonal gear, or need flexible extra cargo capacity without installing permanent roof racks, the RoofPax expandable rooftop cargo bag is built for you. It’s ideal for families, outdoor enthusiasts, and travelers who want dependable, weather-resistant roof storage that installs quickly on most vehicles and protects luggage from rain and road grime.