US 6=EU 39=UK 5.5=Footlength 23.5cm
US 7=EU 40=UK 6.5=Footlength 24.4cm
US 8=EU 41=UK 7.5=Footlength 25.4cm
US 9=EU 42=UK 8.5=Footlength 26.0cm
US10=EU 43=UK 9.5=Footlength 27.0cm
US11=EU 44=UK10.5=Footlength 27.9cm
US12=EU 45=UK11.5=Footlength 28.6cm