Vanilla  skates
Vanilla skates are the only derby boot on the market made in ladies’ US sizes, not men’s. If you own skates already, go up one size from your usual US men’s size skate. If you don’t own skates already, ladies - the Vanilla size should be your Australian women’s shoe size and men - go up 2 sizes from your Australian men’s size.

You can also double check this in the chart below by actually measuring your foot to determine the proper boot length. In a standing position and on a flat surface
place your heel against a wall and take a ruler or tape measure and lay it next
to your foot. Measure from your longest toe to your heel. It is best to do this
measurement with both feet in case one foot may be slightly longer than the
other. These skates come in a standard medium width.