This Kansas City Chiefs / Kansas City Royals authentic Riddell Chromed Speed Flex helmet has been personally hand-signed by Patrick Mahomes and Bo Jackson. This helmet includes chrome inlay. It has all the bells and whistles. It 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.