Amazon カスタマー 4 the quality is really good, but the inside pockets and its not easy to use it fast, the first layer has 4 pocket an which 2 of them really small, and the inside part with a laptop place has to pocket .. fore opening the first layer you have to go through hard burden of opening the lock and then open the big zip!the outer side pocket are really useless because they have really unstable and not trusty buttons !its nothing special and just a simple back pack