PACKiT®, Freezable lunch bag. PACKiT® is the only bag that chills like a fridge and keeps healthy food fresh for hours. The secret is its patented freezable gel liner. Once the bag is frozen, its walls generate waves of cold air that chill from all sides. The bag also folds up for convenient, ready-when-you-need-it storage in your freezer. Available in NFL, MLB, NBA and Collegiate.