Meeting fda silicone food safety standards, 100% food grade silicone no chemical coatings, nontoxic and environmental protection.Durability: excellent acidproof, alkali resistance and corrosion resistance ability.Can be used safely in the oven, microwave, dishwasher and refrigerator.You can easily fold and store the products made with this flexible material without deforming them, so you save space in the kitchen.Warnings:clean it up with hot water for the first time. Do not use with abrasive cleaner or foam. Don't bake the empty cups. You have to inject water into the empty cups and must to spray oil before baking.You'd better put it in carton, placed in the shade when you needn't it.Don't rinse with cold water immediately when taking it out of the oven in order to prolong the service life.Package includes: 1 silicone waffle mold