Eco-friendly: The raw material does nit contain 65 kinds of chemical substances cnvironmental hormones. Hygiene: Heat resistant up to 180 degrees centigrade on boiling water, microwave and steam sterilizer.Easy to clean away the residue and stain Honey-colored: Made from PES with it's original honey-colored resins. Natural and no pigmentation. Chemical Resistance: Safe for cleaning with any kind of detergents.