The zippers are indeed like the entire backpack for the price surprisingly well made, but the overlapping flaps were about who should make the impermeability to water, so closely stitched, that you just have to press downright aside every time to the zippers up or to pull. In the long run this is rather annoying.
The back cushion and the carrier are comfortable, and a few nice touches, such as the omission of the headphone cable, also know how to please.
For the low price (for me 24.95, Amazon EU) certainly a very neat little backpack.