Our stainless steel food storage containers are made from superior 304 food-grade stainless steel, ensuring they are rust-resistant, corrosion-resistant, sturdy, and long-lasting. Rest assured that your food will be stored safely without any harmful chemicals.The four-side locking lids feature inner flexible silicone seals, which can be easily removed for cleaning. To ensure an airtight seal and prevent leaks, simply reinstall the inner seal tightly into the lid's groove. Say goodbye to messy spills and enjoy the convenience of leak-proof storage.The smooth surface of our containers makes them easy to clean and eliminates any potential odor retention. You can either hand wash them or safely place them on the top rack of your dishwasher. They are also fridge and freezer safe for convenient storage options.