Features: Through the use of PGA veteran players to improve the use of a beginner and professional teaching necessary swing auxiliary training artifact. Scientific and reasonable design and construction, easy to carry, easy to use, inflatable balls can adjust the size of their own, neck rope can adjust the length, suitable for different height golf enthusiasts. The smart ball will help you understand how arm and body work during the effective golf swing. this inflatable smart ball is connected to an adjustable rope to satisfy anyone's needs. Using this golf intelligent inflatable ball practitioner can correctly grasp the swing posture, fix and strengthen arm distance muscle memory, avoid arm bending, synchronize your body and arm, effectively improve the swing skills so as to master the correct swing posture, find the right hitting point. It is a good training tool for golf enthusiasts to improve your swing performance through repeated training of intelligent ball practitioners for a short time. Note: Actual color may be slightly different from the image due to different monitor and light effect. Specification: Material: Cloth Diameter: 19cm Package List: 1 x Golf Swing Aid Ball