Made of eco-friendly food grade silicone, it is safe and non-toxic and can be used in microwave ovens, ovens, refrigerators, freezers, and dishwashers. Temperature resistance from -40 degrees Celsius to 260 degrees Celsius, harmless, odorless, soft, waterproof, easy to demold, no fading, easy to clean, durable and retains its shape. Ideal for making homemade desserts, chocolates, rolls, muffins, brownies, puddings, jellies, fudges, and ice cubes. Features a non-stick surface for smooth release. The set includes 50 pieces of 13x9 cm food storage bags, suitable for storing and sharing prepared treats. Easy to clean—simply rinse or place in the dishwasher. Maintains softness and shape after freezing and cooking, offering long-lasting durability.