Drive with Ease · waterproof roof bags, with or without a rack

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  • Asinking 840D Roof Bag, 20 Cu Ft
  • Asinking 840D Roof Bag, 20 Cu Ft — view 2
  • Asinking 840D Roof Bag, 20 Cu Ft — view 3
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  • Asinking 840D Roof Bag, 20 Cu Ft — view 7

The middle of the road, in the best way

Asinking 840D Roof Bag, 20 Cu Ft

4.4 · 811 shopper reviews

Size
20 cu ft
Color
Black

$84.99price seen September 27, 2026

Not every trip needs our biggest bag, and not every roof takes one. At 20 cubic feet this is the sensible middle: room for the family's duffels and the tent, on a footprint that suits most midsize SUVs and wagons.

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  • 20 cubic feet, the size most midsize SUVs and wagons wear best.
  • 840D abrasion-resistant PVC and triple-welded seams.
  • Zipper sealed under widened Velcro flaps.
  • 8 thickened straps, 6 door hooks, 2 extra straps, anti-slip mat, lock and storage bag.
840D 20 Cu Ft — sized for the usual

Sized for the usual

Four people, four duffels and a tent is a normal long weekend, and it fits here without squeezing.

840D 20 Cu Ft — eight straps, one square bag

Eight straps, one square bag

Eight thickened, adjustable straps pull the load square from every side, and the robust buckles cinch tight without fuss.

Spec sheet

Capacity
20 cubic feet
Material
840D PVC
Seams
Triple-reinforced, welded
Straps
8 adjustable + 2 extra
In the box
Bag, storage bag, mat, 6 hooks, 2 straps, lock

Questions from the road

How is this different from the Ultimate 20?

The Ultimate uses 900D tarpaulin with an IPX66 rating; this one is 840D with flap-covered zippers, at a lower price.

Is there a 15 cubic foot size?

Yes, it's a sibling of our 840D 15 cubic foot bag.

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