I bought this for my 10 year old son to improve his dribbling skills. There is nothing more important in developing confidence on the court than being able to dribble while looking at the action on the court instead of on the ball. There was a noticeable improvement to his dribbling skills after just two weeks. The glasses helped him keep his gaze on the court and made a real improvement also in his ability to distribute the ball. Although when wearing the glasses he could look down at the ball, it was cumbersome to do so and quickly reminded him to look up. A great device for beginners!