Portable Tour Striker Smart Ball Golf Swing Training Teaching Aids Adjustable Features: Golf swing aid smart ball, ideal to keep your arms and body in good position when golf swinging, help you develop your golf striking skills. PVC flocking ball surface, anti abrasion and durable to use. 3 optional colors, black, gray and blue. Light weight and portable golf swing trainer, almost no stress on your body, correct your putter to driver swing posture and make you have effective golf swing. Equipped with an adjustable lanyard that meets the fit of anyone. Equipped with a portable air pump for you to inflate the trainer ball, easy to use and easy to store golf swing aid. Specifications: Material: PVC Flocking, Plastic Optional Color: Black, Gray, Blue Ball Diameter: 16cm / 6.3in Air Pump Length: 17.8cm / 7in(Random Color) Lanyard Adjustable Length: Approx. 34-104cm / 13.4-40.9in Use Tips: Slide the buckle adjusters together to fix the strap length. Open the cover of the ball inflation inlet, simply insert the pump into the ball and handy to pump, plug the cover back when finished inflation. Notes: Due to effect of light, camera and monitors, real items' colors may have slightly difference. Allow slight dimension difference due to manual measurement. Thank you for your kindly understanding. Package Includes: 1 X Golf Trainer Ball 1 X Air Pump (Others are NOT included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.