A backpack cooler is an insulated bag designed in the form of a backpack, allowing users to carry chilled food and beverages hands-free while maintaining cold temperatures for extended periods. It combines the functionality of a cooler with the portability and comfort of a backpack, often featuring multiple compartments, waterproof linings, and padded straps. Backpack coolers are primarily targeted at outdoor enthusiasts, such as hikers, campers, and beachgoers, who require mobile refrigeration for picnics or day trips.