Guests can bring in one thermos, 20 oz. or less, as well as blankets, according to a Tweet.
Portable chargers and non dry cell batteries � both no larger than 6″x3″x1.5″ � are also permitted to power heated apparel.
Battery packs must be disconnected during security inspection.
This is crazy. Hopefully, everyone who does attend the game won't have any issues with the extreme cold. If anyone doubts their ability to withstand such conditions, they should stay home and watch the game on TV.