Anonymous wrote:When our kids needed those, we used (and still have) ones from Goodbyn. It is plastic, so OP may not want it, but they were good containers. They were top-rack dishwasher safe so we just put them into the dishwasher every day when the kids got home from school. We had two for each kid (one big and one smaller) and we alternated so that we didn't have to run the dishwasher every day if we didn't need to. These each have an insulated cooler. We made lunches the night before, left them in the fridge and put them into the cooler with a small blue ice pack and then the cooler could go into their backpacks.
Ours are both microwave-safe and top-rack-dishwasher safe.
Large one (we have one blue, one red):
https://www.mercari.com/us/item/m93835781448/
Smaller one (also have one blue, one red):
https://poshmark.com/listing/Goodbyn-bento-lunch-containers-60f8b4b9efd0e467e0676654?utm_source=gdm_unpaid