Transparent glass material, durable, ensuring safety Lock&Lock metal lid glass jar is made of durable, solid glass. Glass material is anti-colour, odour-repelling and does not interact chemically with food, ensuring no impact on the health of users. The glass surface is scratch-resistant, smooth so it is easy to clean when dirty. Sealed metal lids do not cause toxic substances. Airtight lids, help prevent dirt, bacteria from entering effectively, and do not cause odours for foods with specific odours such as fish sauces, pickled fruits. At the same time, metal caps do not stop contaminating toxic substances affecting food preservation.