BPA free, food grade silicone. Eco-friendly and non-toxic. Temperature tolerance: -40℉ to 405℉(0-230℃)An easy-to-pick hole is on every side of the product. The poachers are stackable and easy to store.It is easy to remove the egg from the soft silicone. The ring stander design makes it steady on any kitchen surface. it is also suitable for microwave use. To clean up, simply flip it over and wash it or just toss it into the dishwasher. The Egg Poacher is Multi-functional in Kitchen, you can have hard boiled egg without shell from our poacher and use it as an ice tray.