This standard jelly roll pan with Prism embossed design is slightly smaller than our half sheet. Fits European sized ovens. For baked veggies, French fries, muffins, cookies, cakes and more. Embossed Natural Aluminum Bakeware enhances the look and performance of our hugely popular baking pans. Exclusive Prism grid adds durability and provides easy release while also improving air flow for uniform crisping. Encapsulated galvanized steel rims prevent warping. This discoloration is merely cosmetic and will not affect baking properties or safety of the pan. Prism textured interior bottom adds durability and provides easy release while also improving air flow for uniform crisping Nylon, wood, or silicone utensils are recommended. Metal utensils and scouring pads may scratch natural aluminum pans, but will not affect baking performance.