Made in the USA from heavy-gauge aluminized steel. Each pan has a silicone coating that is free of PFOA and PTFE. This coating minimizes sticking. Steel is corrugated to increase strength and prevent warping. Oven safe to 450 degrees F. Before using, hand wash pans in warm water with mild dishwashing liquid.For the lifetime warranty to be valid, pans must be hand-washed. Because USA Pans are highly efficient, keep a close eye on the timing as you are baking to make sure you don't overbake.