The NFL and NFL Players Association have added 11 helmets to their joint list of approved equipment for 2019 while eliminating a grace period for other models that have fallen short in laboratory testing, engineers and executives representing both groups said Friday.
By the end of last season, 32 players were wearing helmets that are now banned.
Jeff Miller, the NFL's executive vice president for health and safety initiatives, said it is "eminently doable" to convert them to approved equipment.
Each team's equipment manager has been instructed to remove all banned helmets, which are listed on a poster distributed to teams Friday.