The Power Link® is unlike any other golf training aid available today. It is designed to help golfers of all levels and it is very easy to use. The Power Link® will increase strength and flexibility in all of the muscle groups used in the golf swing and you will get full benefit by using the Power Link® for only three to five minutes a day. The great thing about the Power Link® is the fact that you can use it away from the golf course and get the same results. The Power Link® offers many benefits. The overall benefit will be the fact that you will hit the ball farther and straighter. It improves width and extension in the golf swing. It also promotes better rotation and flexibilty. The Power Link® will also specifically work your golf muscles and as a side benefit, will increase your strength - specifically for golf. The major difference with the Power Link® vs other training devices is the "flex cord". The progressive resistance gives feedback to golfer of all levels. Similar devices that must be adjusted can be harmful to one's swing if adjusted incorrectly. Adjusted too short and it is impossible to gain full extension and adjusted too long and the arms become disjointed from the body. The flex in the Power Link® insures that it cannot be done incorrectly. As long as the golfer is pushing against the resistance of the flex cord, width is being increased in the golf swing. The Power Link® is manufactured with only the finest quality materials. The club head is 17-4 Stainless steel and the shaft steel. The "flex Cord" is made from high quality surgical tubing and the harness is industrial quality nylon.