The Titan by Arctic Zone patented Fridge Cold, Crush Resistant, Expandable Lunch Bag is like having your own portable mini-fridge! The lunch bag includes 3 High Performance Ice Walls. These reusable gel ice packs in combination with SuperFoam insulation and a Therma-Flect radiant barrier interior provide superior cooling to keep food and drinks Fridge Cold (under 40°F/4.4°C) up to 6 hours and chilled (under 50°F/10°C) up to 12 hours*! There are three Ice Wall pockets that can be accessed from the exterior of the lunch bag. On days when you want to bring more food, the lunch pack expands to almost double capacity so you can tailor the size to what you plan to eat that day. The interior of the lunch pack features a leak proof**, easy clean lining with Microban to help protect against odors and stains and make the lining easier to clean. The Titan by Arctic Zone Fridge Cold Lunch Bag's rugged exterior is stain and water repellent for easy cleaning and features crush resistant, EVA molded front and back panels - perfect for job sites, the office, regular commutes, day trips or for those who need a sturdy lunch bag. The lunch bag can be carried 5 different ways and includes 2 padded handles and a removable, adjustable shoulder strap if you want to go hands-free. It also includes a leak proof, bento container set. *Results will vary according to the ambient temperature, food type, volume and starting temperature of the contents. **Zipper is not leak proof