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Volume and duration of travel

35, 40 or 45 L: which bag capacity should you choose for a week?

Choose the volume according to your wardrobe, mobility and cabin stress, without confusing liters and authorized dimensions.

1 min estimated readingUpdated on 18/08/2026Desk research · verified on 18/08/2026
Multi-size storage cubes on a travel bed
Choose a volume that really follows your stay.AI-generated Lureox illustration

Editor: Sébastien Delon. Method and level of evidence · Independence and affiliate links · Report correction

35 L: check a narrowed list

A 35 L bag may work for a short packing list, but only a test with your own items can confirm it. Laundry plans and specialist equipment matter as much as trip length.

40 L: compare shape and packing space

Compare the useful space of a 40 L bag to the bag already available. The volume does not guarantee cabin compatibility: check the height, width and depth of the chosen model.

Green bag, clear suitcase and clothes prepared in a sunny room
The pleasure of leaving begins with preparation at your own pace.AI-generated Lureox illustration

45 L : une marge, mais plus de contraintes

45 L provide flexibility for specific equipment or a variable climate. However, they increase the risk of exceeding dimensions, weight or wearing comfort when the bag is filled.

Decide with a real test

Prepare the intended content, weigh it and measure the closed bag. First remove what does not respond to a specific situation before looking for a larger volume.

Sources and dates

Each date corresponds to the indicated source, not a new check of the entire catalogue. The above benchmarks specify the scope of the references that document them.

Preparing for the Future

Turn this guide into a concrete decision.

Use the right tool or complementary content rather than start your search from the beginning.

Get a selection suitable for your trip

Your duration, budget and priorities can change the best choice.