The innovative GreenPan from the Martha Stewart Collection uses a nonstick technology called Thermolon™, which promises to offer superior food release and performance at extreme temperatures — up to an amazing 824 degrees. Thermolon is an environmentally-friendly alternative to standard PTFE nonstick surfaces that you find in many pots. You can even put these pots in the oven, and they are very easy to clean. The cooking surface emphasizes great taste and an environmentally friendly future. Limited lifetime warranty.