Outlier team up with Hyperlite Mountain Gear once again. This time out with the Hypercity International Backpack, the quality-committed brands present a bag sturdy enough for serious use. The backpack is made of nonwoven Dyneema fiber also used in aerospace technology and as steel cords for freight ships, but it is still light enough to float on water. The hardware is aluminum, reinforcing the long-lasting durability of the backpack. Buy it here for $350.