What is stored in it keeps it fresh for a long time. A specially developed silicone ring hermetically seals the lid. The storage cans create order. Lock & Lock freshness boxes are microwaveable up to 120°C. They are dishwasher safe and freezer safe up to -20°C. They can be used everywhere, including in the car, at work, while camping, for data processing, electronics, leisure activities, in the garage, household, industry, hunting, kitchen, warehouse, medicine, laboratory, food organization, parties, travel, sports, school, studies, pet supplies, moving, dressing materials, advertising, yachting, and dental hygiene.