27/02/14:
The idea is good, but the cooling effect leaves to be desired. In the bottom and on the sides gel pad are integrated, the bag is frozen 24 hours, and can then be used. The manufacturer advertises that you after a day in Packit even can put back in the refrigerator leftovers, because everything was then still chilled nicely.
With me not: At lunchtime my food is only slightly cooled, until the evening of the cooling effect with me holding definitely not on. After about 5 hours, the gel pads are completely thawed. My old, classic mini cooler bag with two ice-batteries keeps much cooler.
Those looking for a cooler that keeps food cool for a few hours, perhaps should look for another solution. But for breakfast or transport to the office refrigerator it was good enough.