Food grade materials - Silicone letter mould are made of food grade silicone, durable, anti-broken, flexible, collapsible, FDA approved, BPA free. Scope of application - Temperature ranges from -60 to +240. Safe for oven, microwave and refrigerator. Rich alphanumeric symbols - Alphabet silicone mould are deisgned with different patterns of A-Z alphabets, 0-9 numbers, happy birthday moulds and symbols, it can meet your needs in various occasions, perfect for making gummy, jelly, frozen yogurt, fondant, chocolate, cupcakes, candy, cookies, biscuit, muffins, soap, etc. Easy to clean - The non-stick properties of the material ensure that your homemade food is easy to demould after cooling and has a beautiful shape. Just press the bottom of the mold to completely take out the finished product from the mold. Each mold can be hand washed or put in the dishwasher. Widely used - Happy birthday, Thanksgiving, Christmas and other parties and celebrations. You can DIY according to your needs. It will help you make a beautiful hand made gift for Chirstmas, Birthday, New Year. You can enjoy a wonderful DIY time with your family.