Product measurements: 34(US3):Foot length 8.6 in 35(US4):Foot length 8.8 in 36(US5):Foot length 9 in 37(US6):Foot length 9.2 in 38(US7):Foot length 9.4 in 39(US8):Foot length 9.6 in 40(US9):Foot length 9.8 in 41(US10):Foot length 10 in 42(US10.5):Foot length 10.2 in 43(US11):Foot length 10.4 in