1.DURABLESemi-circular silicone molds can be used in a wide temperature range of -40F to 446F, this durable and flexible silicone tray will not crack or crack like plastic trays, you will find it is a good choice for making Best product for chocolate treats!2.How to use our silicone mold- First, put the semi-circular silicone mold into boiling water for 5 minutes before the first use to remove the smell of the silicone itself (only the first time). 2. Wolffoss Chocolate Mould Balls do not contain BPA. The non-stick material is easy to pop out and easy to clean. The chocolate is easy to unmold!3.Multifunctional UseThe semi-circular silicone mold can be used in microwave oven, oven, refrigerator, freezer and dishwasher. Can be used to make cupcake toppers, treats, chocolate treats, hard candies, fondant, butter pies, cake toppers, and so much more!4.Easy to use and cleanThe non-stick design helps to release the chocolate easily by pressing the mold button. Flexible materials mean they are easy to clean and store.