100% 18-10 mirror polished stainless Steel Nests and stores in less than 1/2 cu. Ft. Of cabinet space. Ceramic the world's best ceramic non-stick is Earth friendly, non-toxic, PFOA, and PTFE free and absolutely will not stain, peel, blister, or fake and nothing sticks to it. Nothing!. Ergonomic removable handles with Instant thumb release easily attach and detach to interchange between pans. Cookware is oven safe to 500 Degree F (excludes removable handles).