Cuisinart"s Chef"s Classic Non-Stick Hard Anodized Cookware: Professional Hard Anodized Exterior is harder than stainless steal! Dense, Non-porous, Highly wear resistant, smooth finish for easy cleaning. Quantanium non stick interior; Titanium reinforced non-stick cooking surface for lasting food release, healthy cooking and easy clean-up. 100% aluminum free cooking surface, metal utensil-safe.