Which ball for which age? Up to 9 years old: size 3 Your Kids small hands require a smaller ball to make it easier to control the ball. From 10 to 14 years old for boys and up to 18 years old for girls: size 4 Young players use a slightly smaller ball to give them a better grip. From 14 years old: size 5 The juniors categories as well as the senior men and women teams play with the standard ball size. Here you find rugby balls, Team Rugby Balls, Training and match Balls. Also Mini-balls and ball Keychains for the best prices check our range now!