With airlines’ carry-on luggage guidelines increasingly restrictive, Travelon Bags offers the soft-sided Classic Plus Weekender. It’s a backpack, messenger bag or briefcase. It’s chock-full of locking compartments for clothes, a laptop and tablet as well as lots of personal items. Slash-resistant body panels and radio frequency identification (RFID)-blocking compartment protect your passport and credit card information. $175. travelonbags.com.