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Carrera Radius Road Helmet White 54-57cm
RADIUS, Revolutionises the Pro helmet. Developed using the innovate "ATF" (Aluminium Tech Frame) system, Radius offers the best aerodynamic penetration (CX) which is synonymous of optimised internal ventilation and less frontal air resistance
Children's bikes are generally measured by wheel size, rather than by frame size. Remember children do grow very quickly and you need to take this into consideration when buying a kids bike, However, if you buy a bike that is simply too big for your child, you will compromise your child's safety, and ultimately discourage your child from cycling.
Age of Child
Which Size Bike Do I Require?
Adults bikes and those for 10/11 years and over, are generally measured by frame size. This is normally the measurement between the centre of the bottom bracket to the top of the seat tube.