I was looking for a backpack, well designed, resistant, allowing me to board computer equipment, files and metal models. With a year of decline, the bag is resistant to various travel (planes, trains, cars) seams are not budged despite a fairly heavy load. (Load quickly overcame other bags). One hesitates on design, but this bag is really practical and it's what I asked. (Good internal facilities and super resistant). Very good wearing comfort. To take your eyes closed if you need a real backpack for everyday use, without making aesthetic bluff.