This jersey has been personally hand-signed by Khalil Mack. Each framed jersey comes double matted in a black wood frame. It is officially licensed by the National Football League and comes with an individually numbered, tamper-evident hologram from Fanatics 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. It measures 36" x 44" x 2" and comes ready to hang in your home or office.