Features: 18L Large Capacity: Measures 16.5"x11.4"x7.5", this cooler backpack with a capacity of 18L, providing ample space for storing food, drinks, daily lunch, and other essentials, large capacity and strong bearing force. Multiple Pockets: The insulated cooler bag Features multiple pockets with large pocket, 2 front zipper pockets, and 2 side mesh bags, allowing you to easily organize and access your belongings. Oxford cloth + PEVA Material: Made from waterproof Oxford cloth and PEVA film in inner, this soft cooler bag is both warm and cold, keeping your food and drinks at the desired temperature, and strong and practical for outdoor use. Insulated Design: The waterproof cooler backpack's insulated design ensures that your food and drinks stay fresh and at the desired temperature for 1 hour. Leakproof design, don't worry about spilled food getting your car dirty. Double-open zipper, easy and convenient to use. Versatile Use: This insulated cooler backpack is an essential tools that suitable for a wide range of activities, including outdoor picnics, camping, bringing food to kids, bringing food to office workers, etc. Keeping food warm in the winter, and keep ice drinks cooling in the summer. Specification: Product color: Black, Grey, Dark Blue (Optional) Material: Oxford cloth + PEVA Capacity: 18L Product size: 420 x 290 x 190mm / 16.5 x 11.4 x 7.5in Packing List: 1 x Backpack