Eagle Creek designed its Systems Go Duffel Pack in a unique way so you can carry it as a duffel bag or a true backpack, and not in that uncomfortable, let's just slap some webbing on the sides and call it a backpack sort of way. On the contrary, padded Air Mesh covers the back panel and shoulder straps to wick the moisture off your body and keep you sweat free after you bolt to your flight, and a padded hip belt maintains a balanced level of support when you're carrying heavy loads. You can tuck the hip belt away and combine the detachable shoulder straps to make a single crossbody strap when you want to rock the duffel bag. Eagle Creek made the Systems Go out of Bi Tech to resist water and remain durable for many years. Apart from its large main compartment, this duffel pack features a sleeve sized to fit most 15 inch laptops, an external side pocket for quick access to your essentials, and a lockable bottom compartment with an internal zippered divider to create two compartments for better organization. Multiple compression straps, lash points, handles, and reflective accents enhance this pack's convenience, and Pack It System compatibility means you can stack five Pack It cubes sold separately in the main compartment for a completely organized pack.