Bought 2.5 & 3.5 qt. sauce pans & 8 qt. Stock pot in the HA1 nonstick line on sale during recent factory sale. Stock pot has indented lip on inside edge but lid still sat perfectly and doesn’t affect performance at all. I love the glass lids so I can see how my food is cooking and especially love that I can clean this pot either by hand or in dishwasher without any damage or dulling to exterior finish. Highly recommend HA1 pots and pans if you’re a home cook who likes to use non-stick cookware.