I use this for steelhead fishing. This A great organizer for all my river tackle. Between the trays and all the pockets, I have just about all my gear packed. It has a small profile so it is easier to billy goat around canyons and bushwhack through brush. It only has a sternum strap so there no extra straps flapping around. With the trays in, it sits upright, so I can set it down, open it up, and get at everything I need to rig up or re-rig. With all four trays in the bottom (they are cheapos but the price difference without trays was like five bucks) the only other storage is the top compartment. With a spare reel, sandwich, a container of spawn, and gloves in there, it is full up. There is no place to carry bulky things like a jacket, etc. There is no easy way I can see to attach a rigged 2 piece rod, which is nice when I have to hoof a ways. This pack is basically a tackle backpack. The zippers seem like they are good quality. The exterior fabric is tough. It comes with a rain cover, but I stowed that in a pocket and sprayed it with water resisting spray. It would be nice to have another one for camping.