Hi friends this is the best bag to use, as a user I recomend you to buy this bag, iam using this bag for past 3 year, no damage happened till now.it is rough and tough bag we can pack heavy items which other bag could not handle.normal bag last up to9-10 months hardly.but this bag is amaizing.it has good space good zib quality, laptop compartment good cussion at sholder and back.very confortable.its totaly value for money