First of all the build quality of this bag is excellent. I am using amarican tourister bag. This company developed so amazing and strong bags.amercian tourister is a leading brand of bags.the mist trustworthy brand and its product is completely reliable.light weight and good grip makes it good. Fabric wuality of amercian tourister is biggest key of its success.this bag will always carry your stuff eith great care.the zippers are the best as cimoared to any other bag brand. I have not changed any of the zippers sice I bought.