
I would like to rate it twice, first at the time of receipt and then after some time of use. The backpack arrived safely in a plastic bag. All zippers worked well. No loose or misstitched seams or corners. Tailoring looks good both inside and out. The backpack is made of a material of medium thickness, so the quality of the stitching of the material is important. A skipped seam, poorly sewn zipper, or poor reinforcement can lead to premature wear or failure. Zipper quality is average, clips are standard. The shoulder straps only have about 3/8" thick padding for sharp edges - I'll let you know after some use if they get cut. The top handle is plastic coated wire rope - looks solid but I can't feel or see anything Lots of material and cross stitch reinforcement at attachment points - I can see how it holds up over time Plenty of pockets and in all the right places Love that it has two side pockets for bottles There are also two slanted zippered pockets above each bottle pocket that runs down the bottom of the backpack - perfect for stashing a foot length umbrella and deep enough to prevent it from falling out. The description says it's waterproof - I'll find out. I like the laptop holder - a padded bag with a secure strap. on top. Good with bag - does not fall out when opened. Main compartment is large, deep and wide. I will be back in a few mo naten come back and give feedback on wearing 3 to 4. Last 6 days rain from medium to heavy - everything stayed dry inside :D !Lightning is good. Sometimes they stick, but that's not a defect - only the material of the bag is light - zippers are like hard materials. The shoulder straps turned out to be comfortable - they don't crack even with a heavily loaded backpack. After a few comments I'll write months off about durability. 05/18/2018 - now survived the rainy season and kept everything dry inside. The material is still intact. I loaded it with 8-15lbs. things and used it daily to get to work and the straps, handles and material were fine. I was concerned about the reinforcement points, how the handle attachment and how the material stretches under heavy loads - but everything was fine :D!. My final suggestion would be that they replace the zippers with YKK branded ones. The ones they use appear to be regular zippers. I noticed on the front pocket that I open a lot, that the zipper rail is damaged in some places. I usually pull the bag zipper at an angle and the zipper gets stuck halfway. I fear the Blitzweg will fail prematurely. I've seen YKK branded zippers are much more durable and self-healing. So that would be my last wish - YKK zippers. I have a Land's End fabric briefcase that is over 20 years old. I've used it and abused it, overfilled it and dropped it. The fabric has holes and tears, but all YKK zippers are intact. This bag would get 5 stars if it used YKK zippers. Otherwise I am very happy with the performance of this bag and would buy it again.

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