Eagle-I Golf Sunglass Trainers Think Different Play Steady Eagle Eye.

Golf professionals, teaching pros and PGA experts all agree that the ability to keep your head steady during the golf swing improves accuracy, contact, consistency and distance.

Theoretically the golf swing requires one to rotate around an axis between the neck and waist. The speed at which one is able to coil and then uncoil generates the power that can be imparted to the golf ball. The ability to remain on the plane determines the direction and control one has and the contact determines the consistency.
Why Eagle-i Works

No matter how much you concentrate on keeping your head still, it may still move.

Remember all the tips you have been told to execute over the years. None of them helped until you repeated the actions often enough for your muscle to remember the feel and automatically perform the actions. Only then could you incorporate these steps into your fluid swing. This is also true when you want to keep your head steady. The best way for us to keep our head steady is for us to incorporate muscle memory.

The Eagle-i creates muscle memory thru your eyes! You see, if you move your head, then you lose sight of the ball. You already know how to keep your eyes focused on the ball but now the Eagle-i trainer uses this natural muscle memory to keep your head steady!