Womens Shoes Size Chart5=Mexico2.5=Chile35=Brazil33=Colombia34=US5=Feet Longth 221-225(mm)5.5=Mexico3=Chile35.5=Brazil34=Colombia35=US5.5=Feet Longth 226-230(mm)6=Mexico3.5=Chile36.5=Brazil35=Colombia36=US6=Feet Longth 231-235(mm)6.5=Mexico4.5=Chile37.5=Brazil36=Colombia37=US6.5=Feet Longth 236-240(mm)7=Mexico5=Chile38.5=Brazil37=Colombia38=US7=Feet Longth 241-245(mm)7.5=Mexico6=Chile39.5=Brazil38=Colombia39=US7.5=Feet Longth 246-250(mm)8=Mexico6.5=Chile40=Brazil39=Colombia40=US8=Feet Longth 251-255(mm)8.5=Mexico7.5=Chile41=Brazil40=Colombia41=US8.5=Feet Longth 256-260(mm)9=Mexico8=Chile42=Brazil41=Colombia42=US9=Feet Longth 261-265(mm)