All-Clad 4222 Stainless Steel Tri-ply Nonstick Frittata Pan Cookware, 11-Inch, Silve Tri-Ply 18/10 Stainless construction diffuses heat consistently Dishwasher and Oven Safe Easy to clean stainless steel will not react with food Durable PFOA-free nonstick coating Energy efficient advanced construction allows heat diffusion from the bottom of the pan up to the sidewalls