YMX BOXING Ultimate Training Ball 63 millimeters, Black, Yellow, Red, Green\nProduct Details\n--Publisher: YMX BOXING\n--Publication date: 0\n--ISBN-13: 076-0385487185\n--Item weight: 40 g\n--Dimensions: 25.4 x 12.7 x 12.7 cm\n--UPGRADED VERSION - Based on the valuable feedback from customers, we improved the product and now we are proud to introduce YMX BOXING V2.0 Reaction Ball to you. The new version contains 2 comfortable headbands and 2 Primary training balls that allows 2 person compete each other, and provides 2 higher level balls for advanced training\n--THE BEST WAY TO GET OFF VIDEO GAMES AND KEEP ACTIVE -My 10 & 12 year old like it so much, that we came back and ordered several more for upcoming birthday gifts for their friends! My husband uses my sons so much I guess I will need more for our house too. And best of all it gets them off the gaming systems and moving around- unprompted!\n--FUN FOR THE WHOLE FAMILY - Kids age 8+ and elders age up to 70+ are enjoying this ce