Punching ball training allows you to instantly release the pressure accumulated during your day's work and quickly relax yourself. When you feel Frustrated or anger, you can hit it to vent your dissatisfaction, which will make your life smoother.? Specification:Material: PU Ball + High Elastic Spring + Steel StandBall Size: 22cm(8.7"); 30cm(12")Adjustable Stand: 93-103cm(36.6"-40.6")? Packing: 1 × Speed Bag1 × Training Pull-Up Bars 1 × High Elastic Spring 1 × Pump? Product Benefits:Spherical precision regular line, fine sewing is not easy to break, effectively improve the tensile strength, and have a longer service life.The speed ball is very flexible, which can improve your endurance speed and accuracy, thereby strengthening your body.It's lightweight and portable, which means you can carry it virtually everywhere with you. Workout anywhere!Spoil your kid, nephew, grandson or pupil with a stunning birthday, Christmas, holiday or impulse gift and make them remember you forever! ? Note:Do not inflate the speed bag too full.When deflating, remove the inflation head and insert the inflation port to deflate.Before each use, check whether all screws are loose, please tighten them before use.The product does not contain gloves.Manual measurement, there will be 1-3cm error, please understand.After receiving the product, there may be a little taste of glue and ventilation outside.