Size Chart:
US6: Foot Length: 8.9", Shoes Inner Length: 9.1"
US6.5: Foot Length: 9.1", Shoes Inner Length: 9.3"
US7: Foot Length: 9.3", Shoes Inner Length: 9.4"
US7.5: Foot Length: 9.4", Shoes Inner Length: 9.6"
US8: Foot Length: 9.6", Shoes Inner Length: 9.8"
US8.5: Foot Length: 9.8", Shoes Inner Length: 10.0"
US9.5: Foot Length: 10.0", Shoes Inner Length: 10.2"
US10: Foot Length: 10.2", Shoes Inner Length: 10.4"
This data was obtained from manually measuring the product, it may be off by 1-2 CM