Insulated Expandable Kids Lunch Box

I bought this for my son at summer camp. After a month of use, the handle broke off. Ok, I sewed it. Whatever happens, he is a boy and may not handle the lunch box very neatly. Washes well and dries quickly. In the summer, I put frozen molds in the inner pocket, which helped to cool the food in the heat. I usually put a spoon and a drinking straw in the outer pocket - it's very convenient. The lunch box has a double bottom, thanks to which you can easily increase the space - it is very capacious in fact. But... The net, which should hold the bottle, broke after several months and now does not perform its function at all. I would like the lunch box to serve at least a few years, not a few months.