Australian sizes are little bit different from European sizes, however, they are much closer to UK.
Click here and the link will lead you to our size guide.
Unless otherwise specified, for now, sizing is in European measurements. UK measurements are provided for a number of items and are closely related to AU sizes in order to facilitate easier purchasing online. Generally speaking, we will advertise EU sizes on the product pages of our website, and EU sizing can be up to 2 sizes smaller than AU. This is a broad rule, and won't apply to each individual item.
Decathlon provides a flexible returns and exchanges policy, so please don't hesitate to contact our helpful Customer Happiness team if you should experience sizing problems.
For the returns policy, please click here.