Add this rare and valuable piece to your Chicago Bears collection with this Khalil Mack autographed Riddell mini helmet. This helmet is guaranteed to be authentic by the Guaranteed Autograph Authentication and features a signature from the famed linebacker himself. Perfect for any football fan, this helmet is a must-have for any die-hard Chicago Bears, Las Vegas Raiders, and/or Los Angeles Chargers supporter. Don't miss out on the chance to own a piece of history.