Product descriptionsMaterial: siliconeBefore use: Please clean the molds and disinfect them in boiling water. After use: Please protect from direct sunlight. Made of food-grade silicone; ideal for baking, lunch/snack cups, and moreCost-saving alternative to disposable paper cups; works with any standard muffin panEffortless food releaseno greasing or cooking spray needed; stain and odor resistantFreezer-, microwave-, and oven-safe (up to 260 degrees Celsius); dishwasher-safe for quick cleanupSet of 36 muffin cups, 9 shapes, such as stars, circles, hearts, squares, donuts, seven-petaled flowers, roses, sunflowers, snow mountains.