Backpacks have come a long way since the 70's, when hikers swore by (and at) bulky external frames and nifty side pockets were few and far between. Nowadays, we have a lot more choices: Hikers can opt ...

This article is a part of CNN Underscored’s Summer Travel Week, a weeklong focus on how to travel smarter and save money during one of the busiest travel seasons of the year. Luckily, many airlines ...