American Shiled Pattonc series Laptops travelling Camping Hiking backpack--TRUE WATERPROOF,TEN years warranty. Super capacity 40L/45L. computer notebook tablet,knapsack,rucksack army knife Militery style bag for man woman Travel Leisure Satchel pocket Fashion multifunction Function Bike bicycle--ASPC40L-1

Well, as the other reviewers note the back pack looks fine - but from an advertised and design functionality standpoint it has a number of contradictions - if not outright failures and deceptions. I bought It because as advertised (clearly no one at Amazon checks this) - it met my first two primary criteria:1. Water proof? Being made of a real waterproof material. Its a really inexcusable that people actually make a backpacks (even several hundred dollars in price) that aren't water proof - but depend on a plastic bag cover in wet conditions. This pack is the only one I could find on the net that was claimed to be made of a water proof material - and it appears to be just so. It is made with a plastic (PVC - not sure - doesn't smell like PVC) bonded and completely water proof fabric - until someone sews it or otherwise makes holes in it during transition from fabric to product.. No attempt was made effectively in this backpack design to make the seams and or zippers water tight and certainly not anywhere close to "water proof."In fact looking into the darkness of my black backpack's main compartment - I can see several points of daylight entering through a number of stitching needle holes. Consequently, we can expect water in the backpack compartments if we set it down and a puddle occurs under it, or even in a heavy rain or even a saturating fog. One could at their own expense and effort - coat all the interior seams with liquid neoprene rubber of similar water proof coating (like used on wet suits) and obtain a more dependable water proofing of the seams and pack in general. You have to wonder why the mfg. didn't do this?Water shedding - longer/broader zipper flaps are needed. Existing zipper flaps barely cover zippers - and while they are better than nothing - they would not at angle or in wind cover the zippers sufficiently to effectively keep water out dependably - in other words zipper flaps need to be twice as wide as they are.I would still suggest that you spray this and any other backpack with a silicone based fabric water "proofing."2. Capacity? This backpack was advertised at 40-45 liters of capacity. Whether it's 40-45 liters in size (about 11-12 gallons or about 1.5 cubic feet for the metrically challenged) is rather dubious. While it is difficult to measure the exact capacity of such a back pack you can imagine that an object that measures 12"x12" by 18" = 1.5 cu. ft. or 45 liters. If you have the pack you will be able to further imagine that said 1.5 cu.ft. object will not come close to fitting in back pack - certainly not whole, nor in pieces, nor as a liquid - especially with the leaky seams. If I had to just guess I would say it might hold 20+ liters or about 0.8 cu.ft. of useable space in the pack. While it does have the 18" depth as advertised in the main compartment that I needed - it is a comparatively small back pack.Looking at the pack it looks smaller the longer I look at it. So, let's actually measure it as best we can. By my measurements of the packs outside (and therefore max possible dimensions - since it all compartments are limited to the outside dimensions when expanded fully - the pack (with all the expansion straps loosened) measures 6.5 inches thick, 14 inches wide at the bottom, tapering to a point 15 inches from the bottom where it is then 10 inches wide (mid shoulder) and the remaining four inches to the top (at your neck) forms an arc - making the max depth of the pack 19 inches deep. By my math that comes up to 1272 cubic inches/1728 cu. in./cu. ft. = .736 cu.ft. x 7.48 gal/ft3 = 5.5 gal. or x 3.8 L/gal = 20.9 Liters and not hardly the 40-45 liters advertised. Once again Amazon sells products they refuse to check out for false advertising.3. Comfort? The shoulder straps on the pack are sufficiently wide to be supportive, but have a very low density foam pad that is effectively non-existent to act as shoulder padding under any kind of load. Again, the pack is smaller than described - I'm 5'-11" and have a 38" waist and even with all the straps loosened to their functional max - it was a close fit - not unlike wearing a child's pack. It has the same low density open cell foam (should be closed cell for support and non-absorbancy) on the shoulder blade/scapula area and the sacral/lower back areas. Again the foam is low density non-cushioning foam and while offering no effective padding, they should make great sweat sponges. Additionally, the chest strap is effectively more of a neck strap (or potentially a garrote) on me - even when at the bottom of its slider range - which is far too high and limited. Make a note to stitch on a new and properly chest strap in the functionally correct location.Going back to the foam padding: One also has to consider that because the back panel of the backpack is also made of a bonded water tight fabric - it's going to be hotter and more prone to sweat build up - causing chaffing and rashes if used heavily. This and other backpacks need to have a pad beneath them like those you can get for car seats - that allow air between you and the fabric. Consider hanging a towel between you and the pack in the worst case.4. Loading - While this is in no-way a tactical pack, it does have military like MOLLE (Modular Lightweight Load-carrying Equipment)attachment capability. It has a host of small plastic "D" rings and lots of straps with buckles and strap loops on the back, side and bottom of the pack. All buckles are typical plastic found on many products today, but not true load bearing materials - user beware.Summary: Basically in my estimation the advertising for this backpack hits the main points of what most of what many of us want in a backpack - but fails to come close to delivering any of them in the manner and specifications advertised. The pack is not water proof - because of its unsealed seams and poorly shield zippers - it could be made so. It isn't comfortable for avg. North American adults because of its proportions and strapping limitations and further it lacks qualified supportive padding/cushioning and effective ventilation on the wearers back. The pack by my math is half the capacity as advertised and Amazon should require the volumes listed to be changed to be correct or have the mfg. prove them to be closer to the 40-45 L as advertised.Poorly checked and or completely omitted specifications by Amazon advertisers has become a major limiting factor in my continuing to use Amazon and or recommendations of Amazon to my associates. Amazon - whom I use to love, owned stock in, and totally supported up until recently when this kind of blatant false advertising became typical rather than the exception for so many of Amazon products. Buyer - continue to beware at Amazon.

I haven't used it yet but do not be fooled like I was I thought I was buying something made in America but it has been shipped from china. It isn't as aesthetically pleasing as it looks in the picture and reeks of plastic. I would have like something made in this country and a little more eco-friendly now that i have it I would waste it but it was a bit of a let down.

A horrible knock off, everything disintegrated in couple months. Please stay away from this product. A customer service has never returned our multiple e-mails...

two years and still in a good condition!