The Lock Eat jars 1000ml are ideal for storing all kinds of food. The range of Lock Eat jars is 100% plastic free. The lid is made of glass and the gasket is made of natural rubber. Thanks to the removable lid, the glasses can be put in the microwave. The jars are excellent for storing or freezing food. Note: do not put the lid in the microwave and avoid temperature shocks of +/- 40°C.