
Product Review · Rooftop Cargo Boxes · #1 Ranked
RoofPax XXL 28 Cu Ft Roof Bag
Extra-large soft-shell roof bag for SUVs · Reviewed by Drew · amazon.com live, Sept 24 2026
Why it scored a 86
At $156.80 the RoofPax XXL 28 Cu Ft Roof Bag carries more than any hard box here for a fraction of the price, and that is why it leads the category: value sits at 90, satisfaction at 92 across 5,306 ratings and warranty at 88 thanks to lifetime zipper and 5-year fabric coverage. Features trail at 76. It is a soft-shell bag, so there is no rigid lid, no aero shape and only a combination lock on the zipper, and 24 inches of height adds wind noise. It needs no crossbars. For a family SUV trip once or twice a year, it is the smartest buy.
What you're getting
- Soft-shell roof bag, 28 cu ft capacity
- 52 x 39.37 x 24 in; 14.85 lb
- Polyester with water-repellent coating and double seams
- Dual zippers with Velcro strap restraints
- 10 tie-down straps plus 4 patented door-hook straps
- Mounts with or without a roof rack; no crossbars needed
- Combination lock and storage bag included
- Soft bag: no rigid lid, and the tall profile adds wind noise
ViperScore breakdown
At a glance
- 28 cu ft soft-shell bag
- No crossbars needed
- Lifetime zipper warranty
- Price$156.80
- TierExtra-large soft-shell roof bag for SUVs
- Category rank#1 of 10

Should you buy the RoofPax XXL 28 Cu Ft Roof Bag?
The RoofPax XXL 28 Cu Ft Roof Bag is for SUV and minivan owners who need a lot of extra room a few times a year and have no crossbars, or no wish to buy them. At $156.80 it ranks #1 of 10 in our Rooftop Cargo Boxes category and is the only Strong Buy. On a smaller car, the Rightline Gear Sport Jr 10 Cu Ft costs $65.99. If you want a locking hard shell instead, the SportRack Vista XL is the value box at $399.99.
Where it earns its score
- Big space, small price. 28 cu ft for $156.80 works out to about $5.60 per cubic foot, versus roughly $22 for the SportRack Vista XL.
- No rack required. Four patented door-hook straps clip to the door frames on a bare roof, and the bag also straps to rails or crossbars.
- Strong owner ratings. 4.6 stars across 5,306 ratings is the best mix of rating and review volume in the group.
- Written warranty terms. RoofPax covers zippers for life and fabric for 5 years, unlike the unstated coverage on the FIVKLEMNZ 21 Cu Ft Roof Bag.
What to know first
- Features is the lowest factor at 76. It is a soft bag: no rigid shell, no aero nose and only a combination lock on the zipper, so it is not theft-resistant.
- It is tall. At 24 inches high it adds drag and wind noise, and it may not clear a low garage door or parking structure.
- Third-party seller. The listing is sold by a third-party seller rather than Amazon, so check the return terms before you order.
Our verdict
The RoofPax XXL 28 Cu Ft Roof Bag scores 86, a Strong Buy and the top score in our Rooftop Cargo Boxes category, on Value (90), Satisfaction (92) and Warranty (88). Buy it if you need maximum space for occasional trips and do not have crossbars. If you want a locking shell that stays on the roof all season, step up to the SportRack Vista XL (83) at $399.99.

SportRack Vista XL
Questions buyers ask
Does the RoofPax roof bag need a roof rack?
No. It includes 4 door-hook straps for bare roofs, and it can also strap to side rails or crossbars.
Is the RoofPax XXL roof bag waterproof?
RoofPax sells it as 100% waterproof, with dual zippers, double seams and a water-repellent coating. Dry bags for electronics are still cheap insurance.
Will a 28 cu ft roof bag fit my car?
RoofPax designs the 28 cu ft size for SUVs and larger vehicles. At 52 x 39.37 in, measure your roof before buying for a smaller car.
Ready to check it out?
RoofPax XXL 28 Cu Ft Roof Bag · ViperScore 86 · Strong Buy · $156.80
How the other 9 rooftop cargo boxes scored
84Thule Pulse 2 M
84INNO Wedge 660
84Thule Motion 3
83SportRack Vista XL
83Thule Force 3 L
82Yakima SkyBox NX 16
80Rightline Gear Sport Jr 10 Cu Ft
75FIVKLEMNZ 21 Cu Ft Roof Bag
74INNO Ridge BRA240 8 Cu Ft
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