When new these are really nice and at a good price. But they are made from steel and ours rusted after 1.5 years of use. The rolled seam holds water from washing and drips rusty water afterwards. The pans still function like new but are starting to rust.

I bought these in the copper color for my daughter's science fair project BUT, now that the cookie baking experiment is done, they have earned the premier spot in my cabinet! I have baked cookies, roasted veggies and cooked French fries and biscuits on them -- they are super easy to clean, the food does not stick AT ALL, there has been no discoloration nor staining nor warping, and everything is browned on all sides thanks to the little raised thingys. I love these sheets! (if you are interested, cookies baked on these sheets will rise more, dry more and be more cake-like than cookies baked on most other sheets. If you prefer gooey cookies, cook them on a different sheet -- BUT keep these for all other things!)

Great purchase

First use and sheets warp.

I bought these because my old pans were warping in the oven. I have only used them 3 times, and they have warped from the first use. This brand has always been one of the best known brands. To get the results I got is disappointing.

I used one of the baking sheets a few times before it began to warp? I expected better from this bakeware. Such a disappointment, so glad that I have other bakeware. .

These are terrible. They warp and when you take them out of oven to sit on counter or stove top they will literally slide off because they are dwarfed so much. Terrible quality.

It's nice to have the 3 sizes but......when the larger pans are in the oven after a while, they pop after getting hot! And they look like they're bending sideways. It's a little worrisome!

I got these because my old ones were looking rough. I am so glad I did. I love them! They are super great quality. Will probably last me a very long time.

I love these cookie sheets. Cookies bake evenly, slide off the pan and cleans so easily!! So glad I bought these just before Christmas- perfect gift to share!