Product Description Storage containers that can also be used for cooking. By storing food in the refrigerator or freezer, then heating it in the microwave and taking it directly to the table, you can easily save time and enjoy meals at home. Made of TPX (polymethylpentene), which has excellent heat resistance, mold release properties, and transparency, so oil stains come off easily. ● Precautions for heating in the microwave: ・Wattage: Can be heated at 500W~600W (up to 10 minutes at 500W) ・Automatic mode is not allowed ・When heating, please shift the lid diagonally 45526-3019-3900x2-None