Description: Golf Training BallInflatable golf swing training impact ball with adjustable neck lanyard, lightweight, durable and portable.Easy to UseGolf Swing Trainer Ball can be inflated used under either armpit or between the forearms.FunctionGolf Training Inflatable Ball can be used to avoid arm bending, correctly grasp the swing posture, fix and strengthen the arm distance muscle memory.Practical Golf AccessoriesGolf training ball helps you understand how the arms and body work during an effective golf swing, correct swing posture.Widely UsedGolf swing training aid ball is great for beginners unisex to practice and professionals for teaching and improving swing performance. Specification: Material: PVC bonded flocking cloth Size Chart: Ball Diameter: 15cm/5.91inch Adjustable Lanyard Length: 78cm/30.71inch Package Includes: 1 Golf Swing Trainer Ball1 Pump1 Adjustable Lanyard Note: Please allow slightly errors due to manual measurement and different monitors.