I bought this american tourister backpack 3 years ago. I use it when I’m going to college. After three years also it is perfectly fine. Not a single scratch on it.
It is good for rough use also. The quality of the material they used on production of the bag is good. The zips are also perfect. If it is exposed to water it will take some time for the water to reach inside thus protecting whatever you are carrying.
The backpacks are available in plenty of designs and colours. It is also available in different sizes.