You'll have to wear this bra when it's sweaty, dirty, hot and clammy. Unlike travel underwear you may not be able to wash your bra each day because they take longer to dry. So you may have to wear one for several days.
Imagine hiking through a rainforest for days or spending 72 hours cramped on a transcontinental train ride. It's bad enough without having to twist and turn your torso trying to find a bit of comfort.
Whatever bra you've been wearing at home may have to stay at home. Of course you won't really know until you have a massive try-on session but in my opinion, there's only one kind of bra you can wear on the road and that's a sports bra.
Get free updates and travel tips just for women, and download a free copy of my (Ridiculously) Practical Packing List to learn to pack like a pro!