These storage boxes have 2 fixed compartments to take a meal, make combinations of starter + main course or main course + dessert in the same container, very practical for lunch at the office! Made of borosilicate glass, they are compatible with the micro oven -waves, in the traditional oven and in the freezer. The seal is removable in food-grade silicone, allowing you to wash it quickly and easily. These two-compartment glass boxes do not stain or take on food odors. Easy to clean, the glass container is dishwasher safe! For the cover, we recommend washing by hand to prevent it from deforming in contact with heat.