CUSHION SMART NON STICK TECHNOLOGY - Carbon steel oven tray with Cushion Smart non stick surface ensuring better air circulating for consistent browning and easier release DURABLE CARBON STEEL - This large Prestige oven tray is made of heavy gauge carbon steel for long lasting performance, allowing heat to be distributed more evenly for perfect cooking results every time FREEZER AND FRIDGE SAFE - Unleash your creativity in the kitchen. You can store Prestige non stick oven tray safely both in your refrigerator and in your freezer if neede OVEN AND DISHWASHER SAFE - You can use this multipurpose oven tray in the oven up to 240C/gas mark 9. It is also dishwasher safe to save you time cleaning up 25 YEAR GUARANTEE - Prestige are so confident in the quality and durability of this metal oven tray, it comes with a 25 year guarantee for your complete peace of mind