For the perfect method of rep training, wear a pair of boxing gloves (not included) safely embody your frustrations, or use our boxing ball set to style your fitness. It can help you increase your heart rate to determine your growth rate with good exercise, at the same time you can improve your time, speed and accuracy without the hand-eye accident, Designed for better use, it features the boxing bag itself as well as it is strong and durable on the bottom. This way, after each hit, the reinforced speed ball will bounce back every time to exercise the strength of the response response, for your convenience, our boxing ball can be easily adjusted and everyone's needs. Very suitable for teenagers, adults and men over 14 years old participating in the highest level of boxing competitions, PU leather boxers, five-layer thick PU protection measures to prevent the ability to resist blows. Strong stainless steel springs. Using a speedometer device, do not cause harm to your relatives and friends