In this cooler bag, you can keep your lunch and drinks nice and cool throughout the day! The exterior of the bag is made of polyester and recycled PET bottles, and the isothermal interior is made of aluminum. The bag has a spacious main compartment and you can easily close it with the zipper. However, this is not just a standard cooler bag. This cooler bag actually has a double compartment, allowing you to keep both your food and drinks cold and warm. The top compartment is designed to keep your food and drinks warm, while the bottom compartment is designed to keep your food and drinks cold. Ideal for taking cold soda cans and a warm lunch at the same time. Very suitable for a day out, at the office, or on vacation!