Sport Beer RIGKeep Your Pit Vipers. Keep Your Dignity. RIG: Retention Improvement Gear. No matter how wild the adventure gets, these bad boys guarantee a strong connection between your Pit Vipers and your pretty face. Adventure hard. Party responsibly. Keep your shades. Features Retention Improvement Gear (RIG) - the technology speaks for itself Clips onto any Pit Viper eyewear - easy on, stays on Strong connection between your Pit Vipers and your pretty face | Pit Viper | Sport Beer Rig