food-grade silicone, . Eco-friendly, non-toxic, flexible, reusable and . Easy to clean. Microwave, oven, refrigerator, freezer and dishwasher safe. Our liners are designed to withstand thousands for time' usage, totally a money saver. Silicone are great for baking muffins, cupcakes, and breads, preparing for treats, desserts on a baking sheet, candy making. Silicone are naturally stick to make popping out perfectly shaped baked treats a .