FIVKLEMNZ 21 Cu Ft Roof Bag

Should you buy the FIVKLEMNZ 21 Cu Ft Roof Bag?

The FIVKLEMNZ 21 Cu Ft Roof Bag is for a mid-size SUV owner who wants a well-reviewed bag for under $90 and does not mind a little-known brand. At $85.49 it ranks #9 of 10 in our Rooftop Cargo Boxes category, a Fair Buy. No crossbars are needed. For $71.31 more, the RoofPax XXL 28 Cu Ft Roof Bag adds 7 cu ft and a written 5-year fabric warranty.

Where it earns its score

• Huge review base. 8,959 ratings is the most in the category, and 4.3 stars holds up across them.
• Lots of room for little money. 21 cu ft for $85.49 is about $4 per cubic foot, the lowest cost per cubic foot in the category.
• Complete kit. It includes an anti-slip mat, luggage lock, storage bag, 10 straps and 6 door hooks.
• Works on any roof. Straps go to side rails or crossbars, and the door hooks handle a bare roof.

What to know first

• Warranty is the lowest factor at 40. The listing names no maker warranty, so you rely on Amazon's return window.
• Material mismatch. The bullets say 840D PVC and the spec table says Oxford cloth; the sizing note also mixes up cubic feet and cubic meters.
• Third-party seller. It is sold by a third-party seller, not Amazon, under a brand with little track record beyond this listing.

Questions buyers ask