Want to walk without the weight? Then load up with Hyperlite Mountain Gear's 3400 Junction 55L Backpack. It keeps weight down and durability high with its fully Dyneema construction and thin yet sturdy aluminum internal frame. Its 55-liters of storage is tons if we're doing an ultralight setup. But that's not even the best part--this featherweight bag features a waterproof construction thanks to critical seam sealing, a roll-top closure, and water-resistant fabric.