MARBLE EFFECT: Each piece of Marblestone bakeware has a grey finish with a speckled marble design, perfect for creating a new collection or adding to your existing cookware. NON-STICK SURFACE: The non-stick coating allows food to be released easily without leaving any leftovers behind,perfect for hassle-free cleaning! The trays are also PFOA-free for safe and healthy cooking! OVEN SAFE: Designed to heat food evenly for perfect cooking results every time, these baking sheets are oven-safe up to 220°C. CARBON STEEL: The versatile baking trays are made from durable heavy gauge carbon steel, meaning they are lightweight for easily removal from the oven. VERSATILE COOKING: Designed with raised sides keeping food and oil well contained, these baking trays can be used to make a variety of home bakes and dishes including cookies and biscuits, roasted meat and vegetables, sweet and savoury delights!