Microwaves, refrigerators, freezers and dishwashers are safe-can be stored in the temperature range of -40C to 200C without changing the container. Just fold up the remaining food inside and put it back in the refrigerator for next use. Our high temperature resistant silica gel makes them safe in both microwaves and refrigerators. Foldable-ultra-compact and ultra-compact storage containers can save more than 60% of kitchen space, and they have color-coded clip-on lids, so you will never feel the frustration of rummaging through a cabinet for a suitable lid. These It is the perfect choice for small apartments, dormitories, RVs, camping, etc. Safe-each container is made of food-grade silicone, which is easy to clean. The airtight cover makes them very suitable for offices, classrooms, camping, road trips, etc. Design-Our snap-on lid creates an airtight vacuum seal to make your food safer and fresher. Our high temperature resistant silica gel makes them safe in both microwaves and refrigerators. It is very suitable for storing leftovers in the refrigerator, and can be heated in the microwave when you are ready to enjoy the food.