Size 5 as it is the official size for matches and is the preferred size of most people of most age groups. 12 years is a good age to start using that size
size 12 or 14
size 8-9Answer4 AnswerI'm a size twelve in women's,and yes,I'm twelve.
Not an appropriate question for a twelve year old.
One size up from a ten year old boy. Or it can be one size down from a twelve year old.
A twelve year old should look like a person who is twelve, around the height 5 foot unless you are short, then this would not apply to you.