Food-grade silicone material with long-lasting surface processing technology. Eco-friendly, BPA-free, and Non-Stick.Temperature tolerance: -40 F to 405 F(0-230 C). Suit for microwave, air fryer, and baking oven. Using spray oil before poaching to get a better non-stick experience. During cooking, the poacher stands on the pan and in the boiling water, protects the egg from the tumbling action of water while conducting the heat to poach the egg. This is a great egg-cooking tool for your kitchen. The poached egg cup cooker can be used as a cake, dessert, and jelly mold. They can also be used to melt chocolate, butter, heat pasta source, and steam vegetables. Our egg boiler mold set comes with an extra oil brush and the 4 candy color cups can help home cooks enjoy cooking fun.