Lock & Lock storage boxes are airtight and watertight, secured with four patented safety locks that can be easily operated with one hand. They are ideal for food storage. The specially designed silicone ring ensures a hermetic seal of the lid, significantly extending freshness and preserving flavors. The 100% airtight and watertight containers prevent odors in the refrigerator. They are suitable for the freezer down to -20 °C and microwave safe up to +120 °C for defrosting and reheating. Additionally, they are dishwasher safe, food-safe with a silicone seal, and stackable.