Yeah, once a player is fitted for the helmet they have to wear it all season. I think the NFL is being short sighted there though. There are interesting studies out there about helmets losing their effectiveness the more hits they absorb. Players should actually be getting new helmets throughout the season. This of course would be an added cost, but would be pennies to what they might have to pay out eventually in law suits and the like. As for our uni's I would love to see them go to a powder coat navy blue helmet...that would be bad ass.