The Titan Deep Freeze Expandable Lunch Box provides double capacity when expanded* and up to 6 hours of fridge cold performance**! It also includes a leak proof food container set. The lunch box features 2 high performance Ice Walls (4 total Ice Walls included – 2 per each lunch pack) that in combination with SuperFoam insulation and Therma-Flect radiant barrier provide superior cooling to keep food fridge cold (4.4°C/40°F) up to 6 hours**! The interior also includes a leak proof***, easy clean lining with Microban**** to help protect against odors and stains. 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 lunch box can be carried 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. This item includes a black lunch pack and a blue one. *Approximately. **Results will vary according to the ambient temperature, food type, volume and starting temperature of the contents. ***Liquids may leak through the zipper. ****Main compartment.