This jersey was used by Isaiah Crowell against the San Francisco 49ers on December 13, 2015. It is officially licensed by the NFL and comes with an individually-numbered Certificate of Authenticity from Fanatics Authentic. The Certificate of Authenticity is signed by Brown's equipment manager Brad Melland and executive VP Brent Stehlik. To ensure authenticity, the item can be verified online using the Certificate of Authenticity's unique alpha-numeric code. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. Please note that this jersey may have imperfections due to in game play.