Leave comment below, how many helmets do you have in your collection and which is your favorite?? Each year, Riddell releases a series of Limited Edition NFL helmets. This years’ AMP series takes the NFL logos and AMPlifies them with over sized decals and inverted color schemes on matte painted shells. 31 of 32 teams (sorry Raiders fans) are available in Authentic, Replica, and Mini Speed versions....once they’re gone, they’re gone. #AMP #NFLAMP #Riddell #RiddellSpeed #LimitedEdition