The green dot is the result of a new rule in effect for the 2007 NFL season. The green dot helmet indicates that the helmet is wired with a radio for calling in plays to the quarterback.
Only one player with a radio is allowed on the field at a time.
The green dot on a helmet signifies a player who has a radio receiver in his helmet.
your question does not make any sense. May be you want to know what are the symbols on each helmet in the NFL.
Here they are :-
Arizona: the head of the bird called (Cardinal)
Atlanta: the feather of the falcon
Baltimore: the head of the raven with the letter {B}
Buffalo: a Buffalo
Carolina: the head of a panther
Chicago: the letter {C}
Cincinnati: the skin of a Bengal
Cleveland: plain orange color
Dallas: a star
Denver: a head of a wild horse {bronco}
Detroit: a lion
Green Bay: the letter {G}
Houston: a head of a bull with a small star in it
Indianapolis: a colt shoe
Jacksonville: a head of a jaguar
Kansas City: Indian arrow with KC on it
Miami: a dolphin
Minnesota: a horn of a viking helmet
New England: a patriot playing the drum
New York Giants: the letter {G}
New York Jets: emblem with the word Jets
New Orleans: it is like a crusade symbol or a scout symbol
Oakland: a pirate
Philadelphia: a wing of an eagle
Pittsburgh: emblem with three 4 headed stars yellow, red and blue
Saint Louis: a head of a ram
San Diego: a bolt
San Francisco: oval emblem with the letters SF on it
Seattle: a head of a sea hawk
Tampa Bay: a pirate
Tennessee: titan
Washington: a head of an Indian
No Stickers will not weaken your helmet, put as many on as makes you happy.
Yes they do depending on the stickers
Each player will bring helmet stickers from his school/team and give them to other players on the all-star team to wear on their helmet. I guess they do this to show respect to the other players/schools from their all-star team.
If you like.
The Stickers on the Stanford Cardinal helmet is a large red S with a green California Redwood in front.
2009
Much research shows that there is no problem with have stickers on any form of helmet such as ; motor cycle helmets, bmx/shateboard helmets and any other form of crash helmets.
GU stands for Gene Upshaw, he was head of the player's union and retired NFL player. He passed away just before this season started.
http://www.helmethut.com/College/Michigan/moorhead.html
50
An NFL-issue Liddell helmet.
The onl special fitting the have is each helmet has ports where you can pump up the different sections to make the helmet fit tight comfortably...