Since the boots are Australian made, they will have the AU sizing on them, which is one size less than the US size. We are selling based on the US size. For ex, US 9.5 is the same as 8.5 AU. So, if you order the boot with size 9.5 US, the tag on the boot will say 8.5 (AU size) on the pull strap. Our half sizes are slightly wider than our full sizes but have the same length. PLEASE SELECT US SIZING