Material: Silicone. Food-grade and non-food-grade materials should be used separately. Wash and boil before use, especially for food. Easy to use, highly flexible and non-toxic, easy to clean, can be used in the oven, dishwasher, refrigerator, etc. Can be used at temperatures between -40 and 220°C. Some materials (such as clay, dough, etc.) may expand slightly when removed from the mold. FAQ: Q: I have used this product three times and already some "pits" are starting to come loose at the base. A: The mold may have been stored for a while and has been pressed, causing the shape to change. Place it in the sun or oven or at high temperature. The mold will then be restored. Q: Can you tell me what temperature the mold can withstand? A: Generally speaking, it can withstand temperatures between -40 and 220°C. In some cases, it can withstand temperatures of 260°C. Please note that silicone molds that can withstand temperatures above 260℃ or below -40℃ may contain additives and may not be 100% pure silicone. Q: Why is the mold flexible? A: The mold is slightly soft to allow you to easily release it from the mold. If you need more stable support during transfer or movement, you can place it on a tray or other form.