A women’s size 6 in Mexico is equivalent to a size 9 in the US; size 7.5 for men.
You can get instant shoe size conversion results using Convert-me.Com - Online Converter.
For those who are not familiar with either the US shoe size chart or the European shoe size chart, you can find your true shoe size using a guide found at eBay.
Learn how to take care of your shoes at Esquire.
Check out 10 Tips for a Good Shoe Fit at MedicineNet.