... non stick coatings on both sides. It lets the hot oven air cook both sides of your food at the same time ... oven, or microwave, or bakeware, or freezer - Better all round hot air circulation so that you food does not have to be ... turned! - Suitable for all ovens (gas, fan, electric, AGA, hot-air, microwave, grill) and freezers- Heat - resistant up to 260°C ...