Review on City backpack POLAR П1956, black by Micha Chmielewski ᠌

I buy this backpack for the third time. For everyday wear. Very comfortable and quite beautiful. On the Polar website it says that it has a volume of 17 liters. I don't know why it says 30 liters. I have a 30l tourist backpack, it is 2 times larger than this Polar. I like it very much, I wear it all year round in the city. Every time, after a year or two, the zippers of the main compartment become unusable. First, lightning diverges, after the lock is tightened, it lasts for several more months, then the lightning teeth themselves are torn. This is the third backpack coming to an end in 5 years. Moreover, I handle the zipper very carefully, I don’t open it in the air, I always put the backpack on the surface. To be honest, I'm too lazy to carry a backpack to the atelier to change the zipper, it's easier to buy a new one. I'm going to buy from some eminent manufacturer or tactical domestic production, I've already felt it - zippers are incomparably better on them.