Prove you are the #1 Greg Biffle fan with this Adrenaline adjustable hat from Chase Authentics. It’s got driver colors and an embroidered Greg Biffle graphics on the crown. This spirited cap also comes with printed details for a pop of color. Also featuring an adjustable back strap, this cap will stay in place while you cheer on Greg Biffle! NASCAR Store is your source for officially licensed Greg Biffle gear.