My kids use them several times a week with no problem. A regular sandwich bread sandwich fits perfectly in a sandwich container, and I use the little ones for grapes, goldfish crackers, raisins, etc. Love how the pieces come together with a cooler bag. My kids usually take PB&J, but when they eat lunch meat I sometimes put an extra cooler in (my daughter's lunch box in particular doesn't seem to stay that cold) - and they both have lunch a little later. Overall I am very happy with them and have bought several. I love that they can be washed in the dishwasher and they stay in good condition even after frequent use all year round.
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