3.8’’ Large Size- 3.8’’ dia. size would bring the comfortable feeling in your small, medium or large hands to grab, pinch, hold for your training. Suitable for children under 8. | Instant Effect- Each ball is 18 Oz, very easy to start your strength and hand-eye coordination training, spending a week to train each day, your 5 YO kid could hit the baseball with great power and precise strike, getting ready for the tournament. | Safe & Space Saving- Still losing lots of tennis balls or whiffle balls over your fence, then break your neighbor’s window? These balls would be your solution, the weight makes it fast to fall and did not roll so far. You could easily start your training in the front or back yard. | For All Ages- Boys or girls in primary school, high school; Men or women in university, company, factory, any place you are working in, if you want to bat or hit the balls for training, releasing your pressure or playing with your friends, these balls would be your choice. | 100% Satisfaction Purchase- We offer 60-DAY RISK-FREE MONEY BACK GUARANTEE and 1-YEAR Replacement Guarantee for this product. Get it soon and recommend to other coaches or dads!