NON-STICK & SOFT - The molds are flexible which can be bent easily. It’s more convenient to use than the hard-plastic molds which may crack when you get the fondant out, these won't easily break. HEAT-RESISTANCE - The silicone mold is safe from -40 to 446 degrees Fahrenheit (-40 - 230 degrees Celsius), which are safe to be used in freezer, oven, microwave oven, and dishwasher.