You can do that today. Just freeze it: https://apps.tsa.dhs.gov/mytsa/cib_results.aspx?search=gel%20ice%20pack https://apps.tsa.dhs.gov/mytsa/cib_results.aspx?s

You can do that today. Just freeze it: https://apps.tsa.dhs.gov/mytsa/cib_results.aspx?search=gel%20ice%20pack https://apps.tsa.dhs.gov/mytsa/cib_results.aspx?search=gel%2... I learned that from one of the TSA line prep barkers. They were putting such a jolly spin on their spiel and it sounded so ridiculous that I assumed it was a joke. But, both happily and sadly, nope.