Package Included: 2 comfortable headbands and 2 Primary training balls that allows 2 person compete each other, and provides 2 higher level balls for advanced training. FUN FOR THE WHOLE FAMILY - Kids age 8+ and elders age up to 70+ are enjoying this competitive fun game, everyone are trying to beat each other by counting more consecutive punches. GREAT WORKOUT WITHOUT NOTICING - Reflex Balls are the new yo-yo for people that enjoy fun activities while getting exercise on the side! The fun factor and mellow learning curve are surprisingly addictive, the time fly by and you dont realize how much youve been training. THE BEST WAY TO IMPROVE REACTION TIME & HAND-EYE COORDINATION! It might not going to improve your punching or boxing technique, but it will definitely improve your reaction time and hand-eye coordination while providing a fun warm-up exercise. EASY AND SAFE TO USE - We specifically designed 4 balls and the PRIMARY one is a very basic level for beginners easy to get the hang of, it doesnt require boxing gloves as the balls are very light and soft and does not hurt even if it hit in the face.