Pack all your gear in practical duffel bags from North Face - Basecamp, Patagonia - Black Hole, Marmot - Long Hauler & Berghaus - mule's for the stashing benefits of a duffle as well as being able to carry your gear like a backpack thanks to transformable straps.
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The Travel Dufflepack from Peak Design is the new classic. A slick, simple and huge duffel-backpack hybrid that will carry everything you need in complete comfort.