The re-breakable boards are sold seperately.
 
They are very firm to break when new and loosen up over repeated use.
We recommend the following colours for students:
Yellow - Junior aged around 7/8
Blue - Juniors from 9 right through to teens and young adults.
Red and black - We rarely recommend these for home use to anyone, except in the case that the student is quite large and strong and has someone at home very experienced in holding.
 
Blue would be the colour to go for in most cases.