Safe at high temperatures, these great lids help prevent stovetop splatters and retain steam during cooking. Prevents spills by creating an airtight, watertight seal on any smooth rim surface. Replaces plastic cling wrap and aluminium foil, good for the environment! The microwave safe silicone material allows for quick cooking, steaming and reheating. Oven safe to 240° Celsius, fridge safe, microwave safe, food safe, dishwasher safe.