These 9 * 13" aluminum foil pans are made of heavy-duty aluminum foil, with a set of 30 and 30 lids for easy heating and cleaning. They are 100% BPA free, ensuring food safety. They are perfect for hot pot, ensuring that your food stays at the optimal temperature during banquets and events. Whether you're cooking, baking, or heating, these tin foil aluminum pans are capable of handling this task. These large disposable containers with lids make cleaning easy and do not require cleaning after use, saving you time and energy.