DurableSemi circular silicone moulds can be used in a wide range of temperatures from -40F to 446F. This durable and flexible silicone tray won't crack or break like plastic trays, so you'll find this is the best product for making chocolate snacks GRADE SILICONEIt is a non-stick material that pops out easily and is easy to clean. The chocolate is easy to release from the moulds. Of course, food-grade silicone is good for your health Versatile useThe semi-round silicone moulds can be *used in the microwave, oven, fridge, freezer and dishwasher. Can be used for cupcake decorating, food, chocolate snacks, hard candy, fondant, butter tarts, cake decorating and so much more (Recommended: Use with a baking tray for better results) Easy to use and cleanThe non-stick design helps to release the ice cubes easily by pressing the mould button. Flexible materials mean they're easy to clean and store (perfect size: includes 2 identical trays with 6 molds each. 7.7"*5.2"*1.1", each cavity is 2.1" in diameter)