Put a lid on it! These superbly designed, uniquely shaped silicone lids create a 100% airtight seal on any smooth rim surface. Works on stainless steel, glass, plastic and ceramic items. The airtight seal will keep food fresh for longer and seal in heat during cooking. Safe at high temperatures, these great lids help prevent stove-top 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, great for the environment! The microwave safe silicone material allows for quick cooking, steaming and reheating. Oven safe to 240 degrees Celsius, fridge safe, microwave safe, food safe, dishwasher safe.