While duffel ... wheels and backpack straps. Duffel bags also come in many shapes and sizes, including small, stylish options known as weekender bags. Can a duffel bag be a carry-on?

I’ve thought a lot about what makes a good piece of carry-on luggage. A summertime European vacation calls for a sturdy wheeled suitcase, whereas backpacks will suit more rugged trips.

Compared to suitcases, duffel bags are sometimes even better to use as carry-ons. They're much easier ... The Travelpro ...

And after you've racked up plenty of miles on those wheels, the Platinum ... the former can be used as a carry-on), the ...