Our {350/500ml Double Wall Stainless Steel Insulated Food Container Box} is the perfect way to keep your food fresh and delicious for longer periods of time. It is designed with a double wall insulation system that prevents heat transfer and keeps your food hot or cold for up to 12 hours. This durable food container box is freezer-safe, leak-proof, and made of high-quality stainless steel. It features a secure locking system that prevents spills. As a factory, we pride ourselves on the quality of our products, and we use only the best materials to ensure that our customers receive the highest level of satisfaction.