Nature inspired lid creates a reliable airtight seal on pots pans dishes bowls etc will attach securely to a wide variety of materials including stainless steel glass ceramic plastic and wood insulates both hot and cold foods preserves freshnessflavour during storage and protects from insects and other unwanted pests crafted from premium quality non toxic bpa free silicone that is incredibly durable lid will withstand extreme temperatures from 220 degrees celsius428 degrees fahrenhe