They make a kids version called the "Micro flite" there about a hundred dollars even.

Tris is right. I wouldnt get the adult size because there might be too much room in the cage of the binding(where the foot goes into the binding). The heel cup will be too big and allow for too much movement, and the cage will be too wide. I would go for the Micro Flites, better choice for smaller feet and better geared towards kids

thanks