Portable Tour Striker Smart Ball Golf Swing Training Teaching Aids Adjustable Features: Golf swing aid smart ball, ideal for keeping your arms and body in proper position during the golf swing, helping you develop consistent ball striking skills. PVC flocking ball surface, resistant to abrasion and durable for long-term use. Available in three colors: black, gray, and blue. Lightweight and portable design, placing minimal stress on your body while correcting your swing posture from putter to driver for a more effective golf swing. Includes an adjustable lanyard to fit a wide range of users. Comes with a portable air pump for easy inflation of the training ball, making it simple to use and store. Specifications: Material: PVC Flocking, Plastic Color Options: Black, Gray, Blue Ball Diameter: 16 cm / 6.3 in Air Pump Length: 17.8 cm / 7 in (Random Color) Lanyard Adjustable Length: Approx. 34–104 cm / 13.4–40.9 in Use Tips: Slide the buckle adjusters together to secure the desired strap length. Open the cover of the ball’s inflation inlet, insert the pump, and inflate easily. Replace the cover after inflation. Notes: Due to lighting effects, camera settings, and monitor calibration, actual product colors may vary slightly. Allow for minor measurement deviations due to manual measurement. Thank you for your understanding. Package Includes: 1 x Golf Trainer Ball 1 x Air Pump (Other items not included)