The STRYK Golf Swing Training Aid Hitting Bag is a simple, yet effective tool in teaching golfers the proper feel and position at contact. One of the most important parts of the swing is at contact, because a square club face helps to hit the ball straight and crisp. Practice swinging into the swing trainer bag repeatedly and see where your body is positioned at contact. Your left arm should be straight with the club, and head behind the ball. After practicing with the bag, take a full swing without it and notice how you swing through powerfully and consistently!