Cotopaxi's Allpa collection consists of heavy-duty duffels and packs ready to travel with climbing gear one week and winter clothes the next, and the Allpa 50L Duffel sits in the middle of that collection in terms of capacity, which makes it the most versatile out of the bunch. It's large enough for traveling away from home for a week or so, yet not so large that you can't pack it with a bunch of climbing gear to hit the gym. Cotopaxi made it out of durable Ballistic paneling and TPU coatings that give it an intense shine as well as extreme resistance against weather and weathering. You can carry it like a messenger bag or like a backpack.