This is from the Jets' site. At first glance, it looked like everything is NFL-wide. However, might also read that it just applies to bags, and the "carry-in policy" prohibiting banners is just for their stadium. Stayed tuned for further research.
Stadium FAQ
What can I bring into MetLife Stadium on gameday?
A new carry-in bag policy has been instituted by the NFL for all teams in order to ensure that game attendees experience a safe and secure environment. Effective immediately, fans may bring only the following style and size bag, package, or container into the stadium:
- Bags that are CLEAR plastic, vinyl or PVC and do not exceed 12” x 6” x 12” in size
- One-gallon clear plastic food storage bag
- Small clutch bag approximately the size of a hand (4.5” x 6.5”), with or without a handle or strap – this can be carried separately or within a clear bag
- Items that are medically necessary, after proper inspection at a specified gate designated for this purpose
Prohibited bags include, but are not limited to: all purses, bags or containers larger than a small clutch bag, coolers, briefcases, backpacks, fanny packs, cinch bags, luggage of any kind, computer bags, and camera bags; seat cushions are also prohibited
If you choose to bring these items to the stadium and do not have a place to store them during the game, you can check them at the Bag Check located on the exterior of the stadium between Verizon and SAP Gates or at other designated locations
To facilitate stadium entry, the Jets encourage all game attendees to bring only what they need to the game. Please note this is a League-wide initiative, so if you are traveling to Jets away games, all stadiums will follow these guidelines.
Carry-In Policy
Guests are welcome to carry-in to the stadium the following items:
- Food contained in a clear plastic bag
- Factory-sealed, plastic bottles of water or soft drinks that are 20 oz. or less in size.
- Still-photography cameras with a lens that is 6” or less in length
- Jackets or blankets after being patted down or searched
Guests may not carry-in the following items:
- Bottles, cans, hard-sided coolers, thermoses or ice chests
- Alcohol of any kind
- Weapons or anything that can be used as a projectile or is deemed dangerous by Stadium management
- Banners, signs or flags of any size
- Umbrellas, strollers, balls of any kind including full sized footballs, laser pointers, or Frisbees
- Single purpose video cameras or still-photography cameras with a lens longer than 6” (detachable or non-detachable)
- Tripods, monopods or "selfie sticks"
- Any animal with the exception of a service animal
- Any other item deemed inappropriate by Stadium management
- For additional MetLife Stadium policies, please click here