Literally to be used for anything you might be doing, from shorter backpacking trips to music festivals to your daily commute, the Alite Designs Shifter Backpack will be your new favorite thing. It's 31 L capacity rolltop design allow you to fit anything you may need in there (it's top opens up wide) and a laptop sleeve with external zipper makes your laptop easily accessible. It's hydration compatible design, along with water-resistant weatherproofing make this pack perfect for longer jaunts into the wilderness. Get the Alite Designs Shifter Backpack, you can use if for life.