Our liners are design to withstand thousands for time ' usage, totally a money saver food-grade silicone, free, flexible, and Silicone molds are great for baking muffins, cupcakes, and breads, preparing for treat, desserts on a baking sheet, candy making Easy to clean Microwave, oven, refrigerator, freezer and dishwasher safe Silicone molds are naturally non-stick to taking out