Hard anodized aluminum construction provides even heating across the bottom and up the sides of the pan. Simply calphalon nonstick 10 piece cookware set (sa10h) thank you for shopping with us! The seller is findthishere and is located in this country US. Interior Clean the interior nonstick surface of the pan with a liquid dishwashing detergent such as Dawn and a non abrasive sponge or soft bristle brush.