size：

US13=FR26=about 18cm  foot length=7.086inches

US13.5=FR27=about 18.5cm  foot length=7.283inches

US1.5=FR28=about 19cm  foot length=7.48inches

US2=FR29=about 19.5cm  foot length=7.677inches

US2.5=FR30=about 20cm  foot length=7.874inches

US3=FR31=about 20.5cm  foot length=8.07inches

US4=FR32=about 21cm  foot length=8.267inches

US4.5=FR32=about 21.5cm  foot length=8.464inches

US5=FR34=about 22cm  foot length=8.66inches

US5.5=FR35=about 22.5cm  foot length=8.858inches

US6.5 =FR6=about 23cm  foot length=9.055inches

US7=FR37=about 23.5cm  foot length=9.251inches

US7.5=FR38=about 24cm  foot length=9.448inches

US8  =FR39=about 24.5cm  foot length=9.645inches

US9 =FR40=about 25cm  foot length=9.842inches

US9.5 =FR41=about 25.5cm  foot length=9.842inches

US10=FR42=about 26cm  foot length=10.23inches

US10.5=FR43=about 26.5cm  foot length=10.23inches