1. The construction of silicone popsicle mold is non toxic, tasteless, sturdy, flexible, FDA approved, reusable, and food grade silicone. 2. Appropriate temperature is varying from -40 Centigrade to 230 Centigrade ( -40 Fahrenheit to 446 Fahrenheit). 3. Easy to clean: Just use the warm soap water to clean them. Or simple put it into the dishwasher. 4. Multiple uses: making ice cream bar, frozen yogurt, and ice. Additionally, it is can be used for handmade soap, jello, chocolate, candy and other you can come up with. 5. The new silicone mold may have a little bit taste of silicone at the beginning, but it will not be baked for several times. Please use it with confidence. Or just start by adding some water to the mold and bake it before use. It is best not to bake or soak in boiling water.