Includes DVD with Drills and Instructions by Sean Cochran, Fitness Trainer on the PGA Tour. * Resistance training blended with path and face angle training. * The XL Iron gives you incredible resistance training both in your backswing and in your throughswing. * The extreme size of the XL Iron"s club face gives you the heightened visual awareness of the club face angle. * The XL Iron forces you to keep the club face square thoughout the entire golf swing based on the physics of the design.