This lunch bag is designed to keep food fresh and at the desired temperature for an extended period. The BUILT Professional design is known for its high-quality construction and features that are tailored to meet the needs of professionals who need to carry food on-the-go. The heat-insulating material ensures that cold items stay cold and warm items stay warm for up to two hours. The bag also has a PEVA lining that is BPA-free, food-safe, and liquid-resistant, which adds an extra layer of protection to the food. Additionally, the outer material is made of polyester and is rainproof, making it suitable for transport in all weather conditions. This lunch bag is perfect for individuals who want to ensure that their food stays fresh and at the desired temperature, whether they are at work, school, or out and about.