1.100% food grade silicone, FDA approved, heat resistant, non-toxic, BPA free, no peculiar smell.
2.Temperature safe from -40 to +446 ℉(-40 to +230 ℃). You can put them in microwave, oven, refrigerator and freezer.
3. Handle is easy for you to remove eggs from pan and it can be bent down slightly when using a lid. Bend all the way down for easy storage.
4.Flexible and non-Stick, easy to demould, Durable and anti-corrosion cracking.
5.Easy to wash with little soap and water, and also safe for dishwasher. http://www.szmilabao.com/kitchen-gadgets/egg-ring/frying-egg-ring-with-handle.html