Charles Viancin Butterfly Lid - Purple Medium 9" Prevents spills by creating an airtight, water-tight seal around any smooth rim round surface Microwave safe silicone material allows for quick cooking, steaming, and reheating Safe at high temperatures to help prevent stove-top splatters and retain steam during cooking Dishwasher safe for quick and easy cleaning 100% BPA free and environmentally friendly - eliminate your need for plastic wrap and tin foil