The pans are great with it being non stick. I even like how they are a little deeper than traditional baking sheets. However because they are light weight and thinner, they warp very easy. When you put then in the ovenext, after about 10 min you hear a loud ping. The pan shifts and it warps. For occasional use and low temperatures it's an ok pan. For lots of use and anything above 350°, get something heavier weight.