500ml Square Store and More Container 4 "I like this box!" LucyJane 22 February 2013 As a busy mum, I thought that these storage and cooking boxes sounded excellent; stockpiling for freezer. Not put it fully through it's paces yet, but have one in the freezer and sent husband to work with one yesterday full of tomato stew. We shall see if it stains... Only one concern; the collapsibility seems very good for storage, but is a bit scary when you are trying to get the lid on tight and accidentally press down... the whole thing (obviously) collapses! So I think you'd not want to transfer in hot food without taking great caution!