My offspring used these boxed (and the two-compartment snack boxes as well) for daily school use. After many many rounds in the dishwasher, the hinges and clips started to come apart - this took at least 18 months, so I found that quite satisfactory considering the daily rough use. When these arrived, we found to our surprise that the inside clip had improved. Now the big compartment can be closed and opened easier and stays closed better when it has to. So *if* we need new ones in 2 years from now, it might just be Sistema's again. Although I think we'll need bigger boxes by then, for my 7- and 9-yrold they're just fine.