Insulated bags are specially designed containers that help maintain the temperature of their contents. They are often used for transporting food and beverages, keeping items hot or cold for extended periods. These bags are typically made with materials like foam or reflective liners that provide thermal insulation. Commonly used for picnics, grocery shopping, or meal prep, insulated bags come in various sizes and styles. Some are equipped with additional features like pockets or straps for convenience. Popular brands include Igloo and Coleman, which offer a range of insulated products for different needs.