Eberlestock F1 Mainframe Tall BackpackThe primary base platform for the EMOD system with a constantly growing number of accessories. Build it up to be a multi day expedition pack, or go in light so you can come out heavy. Tested to hold more than 1300 lbs., this ultra rugged frame utilizes top of the line zippers to allow the attachment of a variety of packs and accessories to fit any backcountry hunt. The Mainframe is fully adjustable and completely user configurable with endless