Jackson remains optimistic about returning Sunday against Indianapolis, and has been a full participant in practice the last two days. But a final determination about his status has not yet been made.
Jackson said after Thursday's practice that he has worn helmets made by Schutt since he was "a little kid."
"Never had a problem," he said.
But he was recently given a newer model helmet, which according to the Schutt website has additional cushioning that will help protect players from injury.
Asked how it feels, he said, "I don't know, man. I haven't played a game yet. It feels better, a little bit."
The NFL has a contract with Riddell, but players are permitted to wear helmets made by other companies if they obscure the logo.
Copyright 2010 by The Associated Press