Umpqua believes fly-fishermen would like to fish out of backpacks more often but donÛªt have many great options. Most fly-fishing backpacks are an afterthought that arenÛªt technically adequate as a stand-alone, nor do they have specific fishing functionality that makes sense. A fully zipped, clam-shell opening allows quick and easy access to the entire main compartment. YouÛªll no longer have to dig from the top down to find items in the bottom of your pack. The new Surveyor 2000 ZS has a completely re-built suspended back-panel that incorporates the same injection-molded frame-sheet in our Ledges ZS Waist Packs, and a full length ventilation channel. This lower back support allows weight to be transferred to the waist and taken off the shoulders, and the fully padded shoulder straps with load adjusters aid as well. And to top it off, the Surveyor ZS integrates with the Rock Creek ZS Compact Chest Pack, the Overlook 500 ZS Chest Pack and the Swiftwater ZS Tech Vest.