The shoe sizes displayed in the shop are either UK sizes (i.e. 6 / 6.5 or 7) or FR sizes (i.e. 42 / 42.5 or 43).

Women's International Sizes
uk2345678
fr3434½3535½363737½3838½394040½414242½
de3434½3535½363737½3838½394040½414242½
us4567891010½11