The Titan Expandable Lunchbox by Arctic Zone, 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 Removable Ice Walls that in combination with SuperFoam insulation and a Therma-Flect radiant barrier interior provide superior cooling to keep food and drinks cold for up to 6 hours and chilled 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 to help protect against odors and stains and also make the lining easier to clean. The Titan Artic Zone Expandable Lunchbox 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 or day trips. Ultra Safe leak proof (zipper is not leak proof) lining helps protect against odors and stains and makes the lining easier to clean. Expands to double capacity (approximately) and can be carried either vertically or horizontally by the handles or by its removable, adjustable shoulder strap. Exterior is quilted and has a durable, water repellent coating for easy cleaning. Includes 2 High Performance Ice Walls that fit into 2 exterior Ice Wall pockets to enhance cold-keeping.