VauDe Asymmetric 30
Here's what other sites are saying:
For big-mileage backcountry days, toss on the lightweight Vaude Asymmetric 30 Backpack. The Asymmetric's suspension system with F.L.A.S.H. NT adjustment gives you a precise, custom fit, so you're not left fumbling all day trying to figure out what works best for you. Plus there are plenty of pockets, loops, and straps to accommodate your extra water bottles, map, flashlight and other small essentials.