Safe and durableOur Chocolate heart mold and letter mold is made of high quality silicone material,tasteless, non-toxic,flexible,dust resistant,resuable,non-stick and easy to clean.can be applied within the temperature between -40 - 446, while the hammers are made of natural wood with a durable finish. NON-STICK SURFACESmooth surface make it easily to take out the cake from the mold without destroying the integrity of the cake, very soft and flexible to use, no matter how twisted and squeezed, it would be as well as new. Simple operationthese tools help bake with less effort and time, just mix the ingredients and pour it into the mold, a diamond heart-shaped mousse is then formed, making DIY simple and funny that help bakers create more interesting pastry dessert, easy to use, release and clean that you can spend more funny baking time with your family and kids. Wide applicationsthese molds are safe to use in ovens, microwaves, dishwasher, and refrigerator, suitable for making cake decoration, bread, mousse, jelly, prepared food, chocolate, candy, fondant and so on.