This is me real objective experience and i are willing to share this with other people. I picked up the most compact waterproof Xiaomi backpack (volume 10 liters) from the post office today. He measured his hands - length 35.5 cm, width 22.5 cm (on the back). For such money you do not need to expect something supernatural, but the backpack is very small and narrow. Folder A4 is included in the stretch. Backpack - just throw a couple of notebooks, a bottle of water and some other little things) Good quality. Material and zippers do not cause questions. The color is bright and saturated. Outside there is a small pocket with a zipper (for a telephone, keys), on the sides there are two open pockets, for example, for water 0.33. Inside there is also a small compartment, which, unfortunately, does not close. As for the delivery, the parcel was delayed a bit (11.11), but the company notified me by mail about the problems of delivery. As for me, taking into account the sale of delivery lines for 22 days does not look critical. My orders were: Z1811110938489416 from 11/11/2018.