Wilson Sporting Goods provides at least 24,960 official game footballs each season — 780 per team — for game use. Before each game, the footballs are prepared according to the NFL's rules. The rules for use include the following:

Two hours and 15 minutes prior to kickoff, both teams will be required to bring 24 footballs (12 primary and 12 back-up) to the Officials’ Locker Room for inspection. Two Game Officials, designated by the Referee, will conduct the inspection and record the PSI measurement of each football. The League’s Security Representative will observe the inspection process. Primary game balls for each team will be numbered one through 12, and any game ball within the allowable range of 12.5 PSI to 13.5 PSI will be approved, and the PSI level will not be altered. Any game ball that is determined to be over 13.5 PSI or under 12.5 PSI will either be deflated or inflated to 13.0 PSI. The same procedure will be followed with respect to the back-up set of game balls for each team.

At the end of any randomly selected game, the footballs will be returned to the Officials’ Locker Room where all game balls from each team will be inspected and the results will be recorded.

All game ball information will be recorded on the Referee’s Report, which must be submitted to the League office by noon on the day following the game.

More Info: operations.nfl.com