Premium quality: Made of natural aluminum; 99.5% purity. Ensures superior thermal conductivity, with even heat distribution allowing all preparations to brown and bake uniformly. Specially designed for pastry professionals, demanding kitchens, and high production. Lightweight, durable, and non-deformable, easy to handle. Cleaning: It is recommended to wash by hand with non-abrasive soap and sponge. Not dishwasher safe. Usage tips: it is recommended to use both baking paper/mat.