The Titan by Arctic Zone? patented Fridge Cold, Crush Resistant Lunch Pack is like having your own portable mini-fridge! The lunch pack includes a leak proof container set as well as 2 High Performance Ice Walls? that in combination with SuperFoam? insulation and a Therma-Flect? radiant barrier interior provide superior cooling to keep food and drinks Fridge Cold (40 F/4.4 C) up to 6 hours and chilled (50 F/10 C) up to 12 hours*! The Ice Walls? fit inside two zippered, exterior Ice Wall? pockets to allow more room for food and drinks on the inside. The lunch pack s interior features a leak proof**, easy clean lining with Microban? to help protect against bacterial odors and stains and make the lining easier to clean. The Titan by Arctic Zone? Fridge Cold Lunch Pack has a rugged exterior that is crush resistant (perfect for kids who like to throw their lunch bags around) and water repellent for easy cleaning (also great for kids). The lunch pack includes 2 padded handles and a removable, adjustable shoulder strap for hands-free carrying. Perfect for school, the office, day trips, etc.