? Can strengthen your body, improve your endurance speed and accuracy. It can swing back and forth with every stroke, which contributes to improving mobility and hand-eye coordination.

The role of the speed ball:
1. Effectively relax the shoulders, cervical vertebrae and the whole body.
2. Aerobic exercises, improve heart lung function, relieve fatigue, relax body and mind.
3. Improve hand-eye coordination and left-right symmetry of the body, which is very beneficial for the brain and body development of people of all ages, especially children.
4. Practice agile movements, good coordination and sense of rhythm.
5. Control the training intensity freely to achieve the highest fitness and leisure condition.

Product specifications:
- Name: boxing speed trainer.
- Fast jumping ball: PU rebound punching ball.
- Material: metal.
- Function: use Muay Thai training, improve impact speed, accuracy, reaction speed, etc.
- Easy to install: fountain pen can choose sand/water

Please note the warm reminder:
?ABOUT THE SALES LIST --------- We only sell box speed trainers, the contents in other pictures are not included.
?ABOUT COLOR --------- Due to different camera, shooting light and computer settings, the actual colour may differ from the picture. Please refer to the actual product, but this is not a quality problem.
About the size: ?e ---------Please allow a slight deviation in manual measurement. There may be a deviation of 1 ~ 2 cm, please refer to the actual product. Please understand this.
About the product. Please check the size before purchasing. ?e and colour. We have many similar popular products. B