Designed to be pushed to the outermost limits of exploration. From the most remote wildernesses to the highest peaks, deepest canyons and longest trails, wherever you chase your passions, our 4400 cubic inch (70L) packs and expedition duffels will get you there. At this size, the Ice Pack morphs into a no-frills, extended approach mountaineering machine. The Porter devours the makings of complex multi-sport marathons, with the Southwest and Windrider in the wings as the means to your specialized, unsupported 10+ day ends. Add a fully-woven Dyneema duffel as the final touch for the airport-to-airport-to-rickshaw-to-donkey-to-Paris-sled gauntlet, and you'll be up on the glacier before you know it.