Dual closure makes this a very versatile lunch bag. For smaller meals, just pack the lunch bag and fold down the top. But for those days when you need a little extra space, the zippered closure offers even more capacity. High density thermal insulation keeps food cold and fresh, and the Ultra Safe? leak proof* lining has Microban? to help protect against bacterial odors and stains and make the lining easier to clean. The Arctic Zone Fold-Down Lunch Bag is perfect for packing school lunches, road trip snacks, office lunches, picnic snacks, and more. The carry handle makes it easy to take anywhere! *Zipper is not leak proof