Your tried and true duffel is great for camping, but pretty inconvenient for plane travel. Do yourself a favor and upgrade to Patagonia's 35L Transport Roller Bag: your shoulders will thank you, and your stuff will arrive much less disheveled. The Transport is Patagonia's smallest rolling bag, sized to meet airline carry on requirements. It features an aluminum frame that expands to protect packed items inside, and collapses once you've unpacked it so you can stow it in a tight spot at home, like under the bed. The main compartment offers a roomy 2136 cubic inches of space for weekend to week long trips, and includes three zippered pockets for keeping things organized, along with compression straps for controlling the volume of your load. One of the zippered internal pockets is mesh so you can easily see items stored inside. A zippered outer pocket allows you to quickly access smaller items. The Transport's telescoping handle can be pulled out to either 38 or 40 inches so you can find the right length for your particular height, and its smooth rolling wheels stay as steady on rough dirt roads as airport walkways. Burly runners on the back protect the bag from wear and tear, while its durable recycled PET fabric stands up to years of use. Carry handles on the top and sides make it easy to grab the bag out of the overhead bin or baggage claim carrousel, and smooth, light colored polyester lining makes finding items inside easy once you've got the bag open in your hotel room. After you've traveled with the Transport, you'll wonder how you ever managed with your raggedy old duffel.