This lunch box is made of corrosion-resistant aluminum alloy material,lightweight and durable, great for home and outdoor use, such as camping, hiking, backpacking, etc. Features: Made of aluminum alloy material,lightweight and corrosion-resistant. Double layers with large capacity for your food. It can be heated/cooked directly over an open flame with your camping stove(not included). Smooth edges for easy cleaning,it will not hurt your hands easily. Top handle with groove design to convenient carrying and hanging. Great for home and outdoor use,like camping, hiking, picnic, backpacking, etc. Specification: Material: Aluminum alloy Capacity: 3L Size: 11.3 * 20 * 13.6 cm / 4.4 * 7.9 * 5.4 in Weight: approx. 364 g / 13.0 oz Package List: 1* Lunch Box