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Ortlieb Back-Roller City, 40 L pair vs ROCKBROS 17-45 L Trunk Bag with panniers

Keep it dry, or keep it safe?

Both can hold about 40 liters. They protect your things in different ways.

ORTLIEB Back-Roller City panniers in black

Ortlieb Back-Roller City, 40 L pair

8.9/10

Wins 2 of 5

Check price

≈ $170.00

ROCKBROS hard-shell bike trunk bag with side panniers open

ROCKBROS 17-45 L Trunk Bag with panniers

7.8/10

Wins 3 of 5

Check price

≈ $89.99

Measure against measure

Compared on Back-Roller City, 40 L pair 17-45 L Trunk Bag with panniers
Capacity 40 L 17 to 45 L
Closure Roll-top Zips
Weather No zips to leak Water resistant
Inner padding Not published Yes
Price read $170.00 $89.99
Listed on amazon.com Yes Yes

A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.

Which of the two, for which rider

Buy the Back-Roller City, 40 L pair

The bag for riding in the rain every day.

Buy the 17-45 L Trunk Bag with panniers

The bag for a laptop on dry-weather commutes.

The questions riders ask

Can I add a rain cover to the ROCKBROS?

It helps in steady rain, because zips are the usual leak point.

Do they need a rack?

Yes, both.

The full page on each

Prices quoted in these summaries are dated readings. The live price is shown next to each product.