Previously, the first-generation Sparrow 30 has been with me for over 12 years; when the zipper stopped working, I squeezed it with pliers and it has been working for another 2 years already. The 40-litre successor does not fall short in quality; there are very well-thought-out new features in this model. Mine already has built-in straps at the top, which surprised me because they are not visible in any photo on the Internet; Wisport modifies its products quietly. It is only a pity that they did not include a flag patch in the set; it would have been a very nice touch on a backpack made in Poland.