The material is platinum vulcanized food grade silicone rubber which is the same as baby pacifier. It is non-toxic, tasteless, safe and environmentally friendly, and meets the standard of daily necessities for food contact in Germany and the United States.
It can be used in refrigerators, microwave ovens and electric ovens. Due to the excellent elasticity of silica gel, when the container is covered, it will naturally form an internal negative pressure state, which can separate the internal and external gas flow and seal. Cover the bowl, pot, basin, etc. in the refrigerator, it won't cross the flavor, and it can keep fresh due to the separation of air.