Eberlestock Mainframe Freighter Frame Pack - With over 100 possible combinations, you can always make sure that you have the right gear, right when you need it. Combine it with one of the Eberlestock duffels, dry bags, or zip-on packs to build the style of pack that you need. The modular system works with over 15 Eberlestock add-on accessories the Mainframe can function as a freight pack or a day pack, and transform to a meat hauler within seconds. With the solid NT7 or 1000-denier nylon fabric, depending on your color choice, coupled with the ultra-light Intex ll aluminum frame, the Mainframe shaves off pounds while maintaining superior strength and comfort. Stop settling for "some of the above" and move over to "All of the Above". Eberlestock's new mainframe, an essential part of your next great adventure. External Frame Pack Weight: 4 lbs 5 ozs Dimensions(inches): 26x11