http://www.lapolicegear.com/diplomat-2day-sorte-backpack.html I bought this to use as a grab-and-go bag for SAR gear. For this application I don't need a lot of sophistication or toughness. It just needs to carry a RON kit, a bunch of reference materials, snacks, then survive being thrown into the back of an airplane, carried into Mission Base, emptied, and tossed in a corner. It replaces a Pygmy Falcon II (LN, green, for sale), which became too small for me as the junk collection grew. For once, the dimensions given in the vendor description are somewhere near accurate although (good) the height of the pack is more like 19". I'd put the useful width at about 9" to 14" as there is a taper to it. Most importantly to me, the main compartment ate four three-ring binders with room to spare. The secondary pocket is good sized as well, easily taking a shaving kit and small change-of-underwear bag. The outside slit pocket is a bit silly, as internally it goes the full height of the secondary pocket but the zipper is down towards the middle. So you will not be able to put in a tall and rigid item that would otherwise easily fit in the pocket -- just because of the placement of the zipper. The material is advertised as 500 denier polyester. It has a plastic inner coating that probably makes it fairly waterproof. Stitching and binding are fine, as are the shoulder straps. I removed the waist belt as it is of no interest to me, but it looks kind of flimsy. There is some padding, though not thick, between you and the stuff in the pack. There is one web loop on each side where you could hang something with a Grimlock or a carabiner. I think the pack would survive daily use for quite a while. A year? Maybe. At the claimed "Regular Price" of $49.99 I would say the pack is an acceptable buy. At $17.99 it is a bargain.