This lunch bag features PackIt's patented cooling technology. Freezable gel is permanently built into the bag, so you will never waste money on separate ice packs or gel packs again!To use, simply fold the PackIt Lunch Bag flat and store in the freezer overnight (12 hours). In the morning, the walls of the lunch bag will be completely frozen and ready to chill food and drinks for hoursPackIt lunch bags are perfect for packing healthy foods such as: dairy, fruits and veggies. Food and drinks stay cool and fresh all day! It's ideal for people with special diets, food sensitivities or allergiesThe Lunch Bag features a zip top closure to lock in cool, dry air. A buckle handle clips onto totes, backpacks and strollers for hands-free convenienceThis soft lunch bag is made from nontoxic poly canvas and has a food-safe, water-resistant lining. Like all PackIt products, the Lunch Bag is made from PVC-, BPA-, phthalate-, formaldehyde- and lead-free materials. Simple care: the interior wipes clean, spot clean exteriorProudly made by PackIt: creator of the ORIGINAL foldable, freezable lunch bag. Designed in California