Our Commercial Grade Natural Aluminum flat cookie sheet is made to stand up to years of use. Featuring supreme heat conductivity and even heat distribution, your cookies will always come out perfect. With a thickness of 2.7mm, you’ll never worry about warping again. And don't worry about rust – this sheet never corrodes! It’s coating free, which means no peeling, no chemicals, and dishwasher safe. Finally, an eyelet makes it easy to hang or store your sheet when you're not using it. Plus, they come with a 10 year warranty just to sweeten the deal.