Finding the right size bike for your child is key to their safety whilst riding. Typically, a child's bike is measured by the wheel size, rather than frame size. Remember to take into consideration that your child is likely to grow. With that being said, it's important to ensure that the bike is not too large as it could compromise their safety or make cycling uncomfortable for them.

Bikes for adults and children over the age of 10 or 11 are generally measured by frame size. The frame size is the length between the centre of the bottom bracket and the top of the seat tube.