What ball should you use?
The ball size depends on the player's age and sex.
Toddlers: sizes 1 to 3.
Girls and boys under 10: size 5.
Girls aged 10 and up, women, and boys aged 10 to 12: size 6.
Boys over 12 and men: size 7.
If you want a very robust ball, go for a rubber ball. If you want a ball with a good feel, leather or synthetic are the right materials.
For the Mini B set, we recommend size 1.