The Food Guard is a heatproof, stretchable to 3 x its size, money-saving food lid that stretches and molds to any sized food container, plate, bowl, dish, pan or storage medium. The Food Guard lid can be used in the Microwave or Oven with a heat range from -40 C (-40 F) to +230 C (445 F). Dishwasher safe, BPA Free, Non-Toxic & fully FDA & EU approved food safe! Pack contains color green, blue, red, yellow and clear. 100% Plastic Free Packaging made from Recycled Cardboard!