Ok, so I waited until after school was over to write this. The backpack held up great! We live in the PNW and it rains hard, a lot. Never did we have issues with leakage. As a 8 year old boy, he isn't exactly easy on his backpack but it held up amazingly well. Well enough that it still looks new and will be used again next year. I am not buying 2 more, for my younger sons. Worth every penny