PackIt Freezable Uptown Lunch Bag, Tie Dye The Uptown Lunch Bag features PackIt's patented built-in cooling system which means no extra ice packs to lose or forget in the freezer! To use, fold the Uptown Lunch Bag flat and store in the freezer overnight (12 hours). By morning, the walls of the bag will be completely frozen and ready to cool items for hours The Uptown Lunch Bag features a wide base for increased capacity. A dry compartment inside the top flap unzips to store snacks, napkins and utensils. Additional storage is available in the exterior zip pocket. The zip closure and Velcro tab under top flap secure items inside bag and lock in cold, dry air A messenger bag style adjustable shoulder strap keeps your hands free. It is a perfect bag for parents, commuters, students and more and is ideal for people with special diets, food sensitivities or allergies Proudly made by PackIt: creator of the ORIGINAL foldable, freezable lunch bag. Designed in California