These are amazing! Now my cookie sheets will always look new! They were easy to trim to fit the pans I wanted them to go in. These things are amazing. My cookies did not stick to them at all. There was no after effect taste whatsoever! The clean up was so easy in the sink with a little dish soap water and rinsed to dry. I wished I would of found this product years ago. I have thrown pans away because they just looked ugly! I highly recommend this product!