Originally Posted by
baslimik
When I travel with my family we usually fold a North Face Base Camp duffel bag into our suitcase because we inevitably have more stuff coming home.
It's a great bag and comes in multiple sizes. Also can be used as a sling bag or as a backpack if needed. Super durable and, surprisingly, not very common on conveyor belts so very easy to spot once it comes out of the hold.
With carry-on luggage only to places where I may acquire items, I carry that or some other very large foldable duffel bag (High Sierra, for example). It saves me from adding to my suitcase collections.
I see those TNF duffels on the baggage claim belts a lot in the Nordic countries. The High Sierra ones are way less common but nowhere near as sturdy as TNF base camp ones.