No matter what your skill level is or what events you compete in, Motorcycling Australia make it mandatory for ALL competitors to have some form of back id, this can be either a name and number printed directly to the jersey or a printed sticker which can be mounted to a hard surface such as a stiff plastic sheet then zip tied to the body armour or stuck directly to armour itself.

This is by far the most efficient and cost effective way of displaying your riding number  because it can be removed and re used whatever the rider chooses to change armours. Unlike the jersey printing which will need to be re done every time a new shirt is purchased.