Healthy baking: baking sheets are made of pure high quality stainless steel to ensure lead-free and no coating, without worrying about harmful substances shedding into food at high temperatures, healthy for your daily use, superior to aluminium or nonstick pan sturdy &durable: solid construction and high hardness stainless steel ensure its durability, rust-free and no easy distortion after frequently use (preheat the oven tray before use is recommended, stainless steel tray may warp because of uneven heat, please rest assured that it is safe and will return to its original shape when it cools off ).
