Patrick mahomes autographed kansas city chiefs black/olive green custom painted speed flex authentic helmet with shocc visor and 3d bumpers - beckett witnessedthis kansas city chiefs authentic speed flex helmet has been personally hand-signed by patrick mahomes. it is officially licensed by the national football league and comes with an individually numbered, tamper-evident hologram from beckett authentic. to ensure authenticity, the hologram can be reviewed online. this process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.