I seriously won't bake without these! They're the best! They're 100% non-stick so I put them under EVERYTHING I bake. THey're easy to clean, they're easy to use, and they are perfect! They don't transfer color or odor so anything I bake on them washes right off. They haven't stained and I have used them for so many things. I have purchased like 10 different sheets and I seriously couldn't speak more highly of them. I genuinely love them and highly recommend them to anyone who loves to bake!