These round airtight food storage containers are amazing! They are made from #316 (18/10) food grade Stainless Steel, (This is the best you get!) and the lid has a silicone seal. The containers are completely air tight. You can also write on the container with a non-permanent. This helps to specify the contents, date and owner. The bottom part of the container can be washed in the dishwasher, but the lid is not dishwasher or oven safe.
8 cm Airtight/Leakproof Food Storage Container. Capacity 140 ml/0.6 cups.