1. Features: - The lunch box uses an outer plastic and an inner stainless - steel material for heat insulation, which can keep food warm or refrigerated for a long time. - The top tray of the food storage container has a leak - proof sealing design, operated by a strong clip, and there are locking buttons on both sides of the tray, so there is no need to worry about food spilling. - It is lightweight and has a large capacity, making it easy to carry and use. It is equipped with a portable handle, which is convenient to hold and can prevent burns. - The multi - layer design can separate the food, maintaining the original flavor of the food while having excellent heat - insulation effects. - It can not only be used as a lunch box but also as a cooler, suitable for fitness, picnics, and other outdoor activities. 2. Precautions: - Due to manual measurement, a deviation of 1 - 3 cm is allowed. - Due to different monitor and light effects, the actual color may vary slightly from the picture. 3. Material: 304 stainless steel + PP 4. Capacity: The small one is 420 ml, and the large one is 620 ml. 5. Dimensions: The small one is 11.5 * 6.5 cm, and the large one is 11.5 * 9 cm. 6. Accessories: 1 storage bag 7. Included items: 1 set of portable heat - insulation lunch box set