I just purchased a set of three small AirBake cookie sheets and have discovered that they seem to be very different from the AirBake cookie sheets I have owned over the past 20 years! I can't say whether I have purchased the same brand as I had purchased over the years, but I have several old sheets that I routinely put in the dishwasher and I have never had water get inside them, nor have they ever seriously discolored from being put through the wash cycle. I didn't read the instructions before washing the sheets, well, because I thought that I already knew how to care for them. Surprise! I didn't. They went into the dishwasher like all the other AirBake pans that I own, and when they came out... UGLY! The smallest pan had water between the layers and the finish looks damaged, even though liquid rather than concentrated dishwashing tablets was used. When I fished out the packaging to read the instructions is where I read the tag line "new and improved" -- by whose estimation? The manufacturer's? I believe that I have come to the realization that the word 'improved' in this instance is at best a misnomer and at worst and out and out lie. So a few words to the wise and young cooks out there: Don't criticize your mother because she thinks AirBake pans are great. They used to be great. It looks like today's AirBake pans are not of the same caliber as the old ones.