Improve overall healthThis is your ideal equipment for fitness exercisesImprove your reaction speed-this is your ideal equipment for gym fitness Strengthen the body during high-intensity exercise Suitable for everyone From beginners to professionals, this boxing ball can ensure you what you need for exercise Lightweight, portable and easy to carry, it can be used almost anywhere, whether at home, in the office, outdoors or in the gym It is very suitable to carry it in your pocket or backpack Suitable for children or adults of all ages, whether or not they participate in battle it doesn't matter The reflective ball is not only suitable for boxing, MMA and other fighting sports, but also can be used by anyone to increase speed and reaction speed Improving overall health and exercise is essential to a healthy life Reflex balls are a good choice for aerobic exercise It can exercise all muscle groups, allowing you to enjoy the fun of boxing in your spare time It can greatly mobilize every muscle in the body, making you work and energetic Yellow ball 20g, red ball 30g, green ball 40gHead circumference: minimum adjustable head circumference 35cm, maximum adjustable head circumference 60cm