Review on Mueller Non-Stick Pots and Pans Set, 16-Piece Healthy Stone Cookware Set with Butter Warmer, Aluminum Body, Deep Fry Pan, Sauce Pan, Pot, Stainless Steel Steamer, Turquoise Color, Vac-Free Vented Glass Lids by John Lewis

Husband wanted his own pots/pans. He chose that. He wanted his. So he selected them and used a frying pan that was black around the edges the first time. Wouldn't come off. The more it was used, the more residue accumulated outside. I don't think they are immune to human intrusion. Now he contacted the company because they said they were guaranteed... guess what, inaccurate description! You have no guarantee! Definitely not worth the money paid! Oh, by the way, they gave him 9:00. pan credit? The! take this garbage! I suggest buying one or two, maybe a skillet and pot, maybe with interchangeable lids and get a better product!