The Titan Fridge Cold Expandable Lunch Box provides double capacity when expanded* and up to 6 hours of fridge cold performance**! The lunch box includes 2 high performance Ice Walls® that in combination with SuperFoam® insulation, Therma-Flect® radiant barrier and leak proof*** lining provide superior cooling to keep food fridge cold (40°F /4.4°C) up to 6 hours**! The Ice Walls® fit inside two exterior pockets allowing you to pack lunch the night before, refrigerate it and insert the frozen Ice Walls® in the morning without losing any of the cold by opening the lunch box. The quilted exterior of the lunch box has a durable, water repellent coating for easy cleaning and an insulated front pocket. The lunch box can be carried either horizontally or vertically by its handles or by the removable, adjustable shoulder strap. The handle also includes a Swing Clip™ that attaches to backpacks for hands free carrying. *approximately ** Results will vary according to the ambient temperature, food type, volume and starting temperature of the contents.***zipper is not leak proof