Scratch Resistant, 100% healthy material (Glass) , Oven safe up to 300°c, thermal shock resistant to 200°c. Can be used in the Microwave or Conventional Oven without the plastic lid. Ideal for storing all types of Food. Offers a perfect storage solution, stackable dishes which can easily fit inside most kitchen cupboards. Easily transportable for eating on the go. Lockable clip lid perfect to storing liquid.