Art and Cook Non-Stick Carbon Steel Large Cookie Sheet, 18" x 18" x 13", Champagne Non-Stick 2 Layer Coated Pan, Heat Resistant to 400 Degrees Scratch, Stain and Corrosion Resistant Rolled Edge Rims for added durability and ensured a more secure grip Stay Flat Design to prevent warping and bending Quilted Texture to improve airfow and even baking